Organizations Become More Global

To some the word â€Å"Globalization† may seem a clichà ©. To others, it may appear an end in itself. Competitive pressures are creating the need for most companies to become Global.Globalization is one means for  becoming and remaining a world-class competitor — a goal encased in the mission statements of most corporations.When developing a globalization strategy, it is clear that the emerging markets present the greatest opportunity. The growth projections for Europe, Japan and the United States pale in comparison to some of the emerging markets.Emerging MarketsThroughout the emerging markets an unprecedented consumer market boom is driving up demand for western-style goods and services. The largest segment of consumers in these markets is a decade short of its peak spending years. In India alone, sales of consumer goods are rising at 14% per year, while China is growing at almost 20% per year. Couple the consumer-spending boom with the still burgeoning need for in frastructure improvements and you’ll have a range of opportunities that extends into the trillions of dollars. Projects are planned or underway in many of these countries to upgrade transportation and  telecommunication systems, explore energy resources, build power generation facilities and provide health care facilities.In addition, the privatization efforts are presenting an incredible range of opportunities for investors, lending institutions, service providers and manufacturers.Four key trend influence emerging market potentialThere are four key trends that are influencing the emerging market potential:1. Demographics: Overall world population growth is now concentrated in the  developing world. Where industrial nations are facing an  increasingly older population, the emerging markets remain  young. The developed world comprises only 11% of the world’s population.2. Governments: Many countries that once relied on centrally planned economies are becoming m arket-driven. Industries that governments  previously restricted to foreign companies are now opening to foreign investment.3. Communications: Access to the emerging markets is increasing due to huge  developments in communications technology such as the Internet and electronic commerce. Cyberspace represents a profound shift in the nature of communications as well as our perception of distance.4. Urbanization: As infrastructure improvements are made, urban growth in the emerging markets will continue to explode.  Estimates indicate that the emerging markets' share of world imports will double by the year 2010, rising to over 38%. Companies dazzled by the magnitude of these numbers must be equipped with the appropriate knowledge, information, and strategy to make its market forays successful.MACRO LEVEL Industry Globalization is due to such factors as :†¢ Level of international trade †¢ Intensity of international competition †¢ Worldwide product standardization †¢ Presence of key competitors in all key international markets. †¢ Intra-firm trade †¢ Technological intensity †¢ International linkages of value-added activities among countries †¢International integration of value-added activities among countries †¢ WORLDWIDE FREETRADE AGREEMENTS †¢ WORLDWIDE ECONOMIC REFORMS †¢ WORLWIDE FINANCIAL REFORMS †¢ REMOVAL TARIFF BARRIERS BY COUNTRIES †¢ REMOVAL OF SUBSIDIES COUNTRIES †¢ ETC ETC ====================================================THE PUSH FACTORS OF GLOBALIZATIONMarket Drivers†¢ Per capita income converging among industrial nations †¢ Convergence of lifestyles and taste †¢ Growth of global and regional channels †¢ Establishment of world brands †¢ Spread of global and regional mediaCost Drivers†¢ Continuing push for economies of scale ( but offset by flexible manufacturing) †¢ Accelerating technological innovation †¢ Advances in transportation (e.g., use of FedEx to deliver urgent supplies from one continent to another) †¢ Emergence of newly industrializing countries with productive capability and low labor costs (e.g., China, India and Indonesia)

Hard Work Is the Key to Success

I am writing this content only those who are fresh graduate and wondering full time or part time work. First of all, I say that graduation is not top part where you have reached. It is just first step. You should study post-graduation. If you do not do it regularly, you should study it through correspondence. Master degree is must before wondering full time work because next two years will give you more learning skills.Now, when you go for wondering work, you should remember that your hard work is the key of your success. No work is bad. There may be more quality in small work. Education increases our power to give better service. So, you can do your work from any small service. It may be the duty of salesman. It may be the duty supervisor or tutor. You do that duty with full of hard work. Sweat from your body is the sign that success is very near to you. It may be possible that your family's financial condition is not good.I ask one question from you whether only to say this to othe r is sufficient. No, never! Nobody will give you any financial help. Nobody will give you money. Yes you can do labor. Yes you can sell the small products. Yes, you can do duty and earn money. This earned money can only support your family. This earned money can power to your family. Why are you wasting time just telling your weak family condition. Use same time to get new idea for hard work.

Project Jesus 1 Assignment Example | Topics and Well Written Essays - 500 words

Project Jesus 1 - Assignment Example In both numbers and John, there are some similarities. Just as Moses lifted up the snake for those bitten to get healed, so Christ must be lifted that anyone who believe may get the eternal life The following traits are predicted about Messiah: Messiah would be like Moses, he would be the Lord God himself, he must shine from Galilee, must be from King David’s line of descendants, would be the son of God, would be born in Bethlehem and must suffer for mankind’s sake. The Holy Spirit role was to be the soul of the church and Christ’s body. He is with Christ, the head of the church, for each church member to unite them, and in the entire church in a perfect harmony. King is the most prominent feature since Messiah was born in the lineage of King David. The priest does not feature most since it was believed one could not be a king and a priest at the same time. Prophesy appears in few places where Christ’s acknowledges being a prophet. In the first coming, it is foretold that the Messiah will not be accepted, and the kings of the earth will plot against Him and those whom He anoints. Whereas in the second coming, it is foretold that the messiah will come back after the rapture and the restoration of Israel to judge both the good and evil. In addition, during his second coming people there will be only one religion and those who will refuse to worship him will get punished (Cox Jr.). 10. Using the evidence above, explain how Jesus could have known that He â€Å"must suffer many things and be rejected by the elders and the chief priests and the scribes, and be killed, and after three days rise again† (Mark 8:31, cf. 9:12; 10:32-34). He was declared by Jehovah as the only begotten son and given the decree over everything. As a prophet in his first coming, Jesus foretold His suffering at the hands of mankind and knew the will of God who sent Him to be fulfilled, and then He must go through suffering. Messiah means the one who has been anointed. Only

You are the sole judge of a new literary competition in which you must Essay

You are the sole judge of a new literary competition in which you must choose the best novel of the 20th Century. 1. Examine the critera to be applied in choosi - Essay Example The novel is something that often falls between the cracks of such taxonomy, however, since any given novel might embody one or any number of the above classifications of literature. As such, it becomes important to rely on a different, often personal, classification system and related critiquing methodology. Various prestigious literary awards are given to authors who meet the specific criteria of each organisation; for example, the Booker Prize is awarded for the work which is the â€Å"best work of fiction by a British or Commonwealth writer†, and the Nobel Prize for Literature is given to the author who has â€Å"produced in the field of literature the most outstanding work in an ideal direction† (ibid., p.199). Often, the criterion for judging literature rests on the personal opinions of the original organizing committee, however once this has been established it is the role of recruited judges to stay with such ideals and work within the boundaries of the competit ion or publication. Danson Brown proposes that there are three terms which are of vast importance in any literature judgement: taste, aesthetic and canon (p.200). Taste, in modern society, is related directly to consumerism and to each individual choosing literature that suits his or her own idea of what a novel should be. The tastes of each reader and therefore each judge will vary from that of another and it is this simple principle that makes brass judgement of literary works so difficult. Aesthetic refers to (again in modern society, as the word has evolved since its inception into the English language) the role of philosophy in judging literature. This criterion would have a critic assume that each novel should have undertones that inspire deeper thought on the part of the readers and propose some otherwise hidden aspect of the world or of the human psyche. Canon refers to the ability of the literature

Moral Essay Example | Topics and Well Written Essays - 750 words

Moral - Essay Example The plot of The Importance of Being Earnest centers around deception. Algernon is a wealth bachelor that lives in London. He often pretends to have a friend Bunbury who is sick and lives in the country. Whenever Algernon wishes to escape certain social utieshe is explains that he simply can no because he has to visit his sick friend. He can then escape and enjoy the pleasures that Victorian society called improper. However, his friend, Bunbury, does not exist. Through this form of deception Algernon not only gets pity from his friends he also has the perfect excuse to do whatever he wants. Algernon's believes his best friend is named Ernest. Ernest is actually John Worthing. John Worthing is also using deception to escape his restrictive and boring existence. He tells his friends that he has a wayward brother who lives in London and is often in trouble. Therefore he must go to London to bail his brother out. When John is in London he goes by the name of Ernest. He pretends to be a go od man in country only to be a adan in the city. John wants to marry Gwendolen, but she wants to marry a man named Ernest. When she meets John using the name Ernest she falls deeply in love with him. Gwen's aunt insists on knowing his family background and he is forced to reveal that is real parents left him at a train station and he was adopted by a rich upstanding Victorian family. Algernon has the idea that he will go into the country to visit John and pretend to be Ernest. He is unaware that John has given up his city life and has planned the tragic (but unreal) death of his brother. Deception plays a vital role in this play. If John and Algernon did not lie there would be no play. If each character followed the Victorians standards of society, there would be no plot. While this play is a comedy, Wilde's point is clear: only through deception can people exist in Victorian society. If they did not use deception everyone would surely die from boredom and the suffocating grasp of s ociety. Similarly, Shakespeare Hamlet is based on deception. Hamlet begins with the death of the King of Denmark. He has been killed by his wife and brother. It is Hamlet who is first deceived by his mother. She gets married without telling Hamlet. When Hamlet arrives he is disgusted by his mother's actions. The role of deception is seen throughout the play. Hamlet pretend to be crazy, he pretends not to love Ophelia, and pretends not to know that his mother killed his father. Claudius and Gertrude pretend to care for Hamlet only to try to have him killed. Rosencrantz and Guildenstern pretend to be Hamlet's friends but are really acting like spies for the king. Deception in Elsinore is a symptom of disease society where ambition and greed run rampant and uncontrolled. All the characters in Hamlet must lie to survive and in the end deception kills them all. The societies in Importance of Being Earnest and Hamlet are both portrayed as corrupt. In amletthe court of Elsinore is the representative evil society. It is a toxic environment that breeds blind ambition, betrayal, and evil. Hamlet comments "'Tis an unweeded garden that grows to seed; Things rank and gross in nature possess it merely" (Shakespeare Act I, sc ii). Claudius and Polonius are to of the top officials in Elsinore and therefore responsible for the destruction of a good society and the

Motorola Essay Example | Topics and Well Written Essays - 2500 words

Motorola - Essay Example These are in mobile devices, mobility communication solutions, networks and connected home solutions. In the mobile devices section, the company sold a record 46.1 million units of handsets in the first quarter of 2006. This represents 21 percent of the total global market (Motorola, 2006b). Compared to figures recorded during the same period in 2005, there has been 4.8 percentage points improvement in sales. Major competing firms to the company in this sector are Nokia, Samsung Electronics, Lucky Gold (LG), etc. Whereas the market share of some of them (Nokia) dipped (Businessweek, 2005) that of Motorola company saw a rise. The Motorola Company is presently the leader in multi-mode and multi-band communications products and technologies. In a survey of the telecoms sector, Sandage (2003) pointed out that creating and delivering multimedia services to mobile handsets had proved more complicated to many mobile phone manufacturers than was initially envisaged. Any firm with capabilities in this area therefore, is bound to improve its position on the market with time. The Motorola Comp any's present 'seamless mobility" vision seeks to address this problem squarely. The company has pioneered several product developments in this sector. For example, it was the first to introduce a handset with a Linux operating system and Java technology providing full PDA functionality in 2003. Prior to this period, proprietary systems powered these handsets. The company has also contributed significantly to designing more portable and stylish handsets. Its RAZR V3 measures just 13.9mm. This particular gadget has won for the company a gold award in the consumer product category of the Business week magazine's industrial design excellence awards. In partnership with the GSM Association, Motorola company has developed in 2005, an ultra low-cost cellular phone with long talk time for consumers in developing markets. In the same year also, it introduced the Ojo personal video phone. This product has excellent capacity in transmitting full-motion video and audio synchronically over a high speed internet. The company is also the leading provider of push-to-talk over the cellular (PoC) technology to cellular service providers. These developments are important to internet telephony and television. The company has also developed the ROKR portable phone with the Apple Company, with the itune music software incorporated. The Motorola Company is also playing a leading role in the mobility communications solutions sector. It services the needs of individual consumers, business concerns and publicly funded institutions. In recognition of its meritorious services in this sector, the company was honoured with a Malcolm Bridge National Quality Award in 2002. That award was the company's second. The company has fared exceptionally well in comparison with its competing firms such as Nextel communications, American Movil, Western wireless, etc. The Motorola Company is also playing a leading role in the integration of core networks using wireless IP, wireless soft switch and IP multimedia subsystems. The company's networks unit has spawned several new innovative technologies in recent times. In 2000, for example, it introduced to the world, the first 700MHz wideband high-speed data transmission technology. This technology enables advanced solutions to be provided to customers. The linkage between broadband expansion and

Discrimination and Racial Profiling Coursework Example | Topics and Well Written Essays - 250 words

Discrimination and Racial Profiling - Coursework Example The categorization of people based on their race has resulted in numerous problems starting in the 17th century all the way to the 21st century. It promoted slave trade, especially for Africans. This explains why the African-Americans are the most segregated group in the U.S (Klein, 2012). After being arrested, a black person is 33% more likely to be incarcerated as compared to the whites. An African-American is 30% more likely to drop out of school than the whites and 21% than the Hispanics or Latinos. In the same way, the police are likely to pull over and frisk either blacks or Latinos than whites. In the city of New York, 80% of the police stops made were for African-Americans, 60% for Hispanics, and 12% for whites. In 2013, the U.S Sentencing Commission reported that blacks received 11% longer than whites for similar crimes than whites. In the same way, the black drug offenders were 20% more likely than whites to receive mandatory minimum sentences (Alexander, 2013). To that eff ect, the blacks remain the most discriminated ethnic group. As the most segregated minority groups, the blacks have been forced to give up their culture so as to participate in the mainstream American life. Recent studies have indicated that 75% of the black ethnic minority experience unemployment. Furthermore, their health and education facilities are poorly equipped than the white’s who are considered the majority community and superior (Waters,

Groupon And Alibaba Statistics Project Example | Topics and Well Written Essays - 750 words

Groupon And Alibaba - Statistics Project Example To achieve this, it looks at IT startups and other e-commerce ventures as opportunities for growth and business merges, to form a global conglomente, providing B2B, and B2C business channels. In contrary, Groupon business strategy is based on economies of networking and economies of scale, encouraging consumers to sign up as a group and enjoy Groupon offer. This strengthens consumer bargaining power, which may be attributable to its poor performance in comparison to Alibaba free market design, where consumers and business are provided with a platform to deal with each other directly. Alibaba major products include free upload of item for sale, payments processing capabilities, item categorization and point-of-sale solutions. Groupon major products are not much different from that of Alibaba, only that item categorization is applied depending on clients preferences. E-commerce industry is fast paced with new inventions and innovations every day. The degree of competition is high, with new entrants at local levels anticipating to go international in future. Substitute’s product for e-commerce business is social networking sites, where businesses and consumers are engaging in business with one another. In e-commerce, the industry has power over consumers to an extent, because it may lead to a rise in prices when it raises its charges on traffic their offer. However, consumers are not tied to a single supplier, because the platform offers a platform for multiple suppliers to meet and trade with clients. Mobile e-commerce is one of the key emerging issues within the industry. Regulations are not very effective, with cases of fraud reported. Alibabas’ growth strategy might provide for long-term market leadership, dependent on the risks of cooperation and merging with other businesses. It employs product differentiation leadership in its business. Alibaba faces no liquidity problems in future, observed in it management of working capital to

Scientific Writing Essay Example | Topics and Well Written Essays - 500 words

Scientific Writing - Essay Example Innate immunity comprises mainly of the skin and mucosal surfaces. The main function of this immune is to prevent entry of specific non-self antigens. In many cases, compromising of innate immunity occurs and consequently pathogens gain entry into the body. The remedy then is the acquired immunity, which comprise the cellular immunity, (lymphocytes, macrophages, natural killer cells, and antigen-presenting cell) and humoral immunity (mediated by macromolecules). It works by recognizing disease causing pathogens and triggering mechanisms that destroy them. (Weinstein 40) Many diseases that kill people in this century originate from stress as opposed to improper diet, and pathogen resistance to drugs. More investment on in making people less stressed than in pharmaceutical firms it to be considered by any nation that want healthy and effective citizens. An immune system in its right condition is able to keep pathogens at bay and maintain the body health. Stress remarkably interferes the immune system by altering its functioning. It suppresses the immune system function and over time causes tearing down of this important system. Stress is the feeling of inability to deal with a life-threatening situation. It leads to emotional, psychological, and physical problems. The physical problems include heart disease, high blood pressure, chest diseases, and heart rate abnormalities (Harrington 26). The adrenal glands release adrenaline when someone is under stressful conditions. It responds well to short term stress through fight or flight response. Adrenaline stimulates the heart rate, contracting blood vessels’ dilating air passages thus increasing a subsequent flow of blood to the muscles and the amount of oxygen intake in the lungs (Weinstein 43). These responses affect the digestive system by inhibiting the digestion. If stress is prolonged, the production of

Human Rights and Democracy of Filipinos Essay Example for Free

Human Rights and Democracy of Filipinos Essay According to the United Nations, The values of freedom, respect for human rights and the rule of holding periodic and legitimate elections by universal suffrage are vital elements of democracy. In turn, democracy provides the natural environment for the protection and effective realization of human rights. These standards are embodied in the Universal Declaration of Human Rights and further developed in the International Covenant on Civil and Political Rights which enshrines a host of political rights and civil liberties underpinning meaningful democracies. The relation between democracy and human rights is captured in the Universal Declaration of Human Rights, which states: â€Å"The will of the people shall be the basis of the authority of government; this will shall be expressed in periodic and genuine elections which shall be by universal and equal suffrage and shall be held by secret vote or by equivalent free voting procedures.† With this notion, Martial Law in the Philippines only proves that during that time, Human Rights and Democracy is not totally practiced in the whole nation. The circumstances of arrests, detentions and searches made without court orders are common practice during the martial rule. The fundamental principles of legality and due process have been neglected, with security forces having unprecedented powers given by the head of state under this martial law. Election frauds were also perceived. Justice among those involve were deserted and abandoned and Justice for the country’s democracy were put in to trash. Martial rule and suspension of writ of habeas corpus, which allows warrantless arrests, detention and conduct of searches, have been a convenient solution for the police forces incompetence in enforcing their rudimentary duties. The soldiers have cemented their de facto superiority over the police in conflict areas. But thirty one year had already passed, and the Armed Forces of the Philippines have repeatedly been accused of involvement if not actively engaging in the killing of defenceless political activists. The AFP restates that they never will have a rule of intentionally targeting civilians as well as those who may have a different political orientation from our government for as long as they detain their resist within legal and legislative means. The AFP remains committed in  their duty to help ensure that the Philippines progresses as a democratic society free by armed threats. Their answer is explicit in the AFP’s code of ethics in support for peace initiatives. Furthermore, the AFP will persist to fully assist with fact-finding bodies formed by proper authorities. But investigation should be based on valid pieces of evidence as determined by courts and not simply on given away allegations. With proper procedure the AFP makes it a point that Justice is served to each and every Filipinos. Their faults in the past should not be carried today, for the scenario and period is different. Changes in the agency only attest that they are coping with it in order to have Justice in every aspect of their post. References: * United Nation. 2012. Democracy and Human Rights.[Online] accessed from http://www.un.org/en/globalissues/democracy/human_rights.shtml on December 09, 2012 * Asian Human Rights Commission. 2009. Philippines: Martial Law Dilutes Human Rights [Online] Retrieved from http://www.scoop.co.nz/stories/WO0912/S00305.htm on December 09, 2012 * General Hermogenes C. Esperon Jr. 2007. The AFP in a democracy:protecting human rights [online] ebook downloaded last December 09, 2012

Perforation of Composite Sandwich Panels

Perforation of Composite Sandwich Panels CHAPTER 1 INTRODUCTION 1.1 Introduction The use of sandwich structures has been increasing in recent years because of their lightweight and high stiffness. Commonly, the naval industry and transportation uses the E-glass fibers while the aerospace industry uses composite structures such as carbon fiber. The use of sandwich panels with composite facesheet in the naval industry is particularly appealing because they have better corrosion and environmental resistance and reduced magnetic signatures when compared to double-hull construction steel ships. On the other hand, composite sandwich panels are easily susceptible to damage by a strange object impact. The damage may be visible, penetration or perforation, or invisible, internal delamination and debonding. Both types of damages will result in stiffness and strength reduction. It is then important to study the impact behavior of composite sandwich panels. Failure in composite structures can be caused by low, high and extremely high or localized impact. An impact caused by a foreign body initiates two waves from impact point in a panel: a through-thickness wave and a transverse shear wave. Whether or not these waves play an important role in the impact response of the panel depends on the actual contact duration between the projectile and panel and the time it takes the transverse shear wave to reach the panel boundary. Figures 1.1 (a)-(c) show three-impact scenarios: low-velocity, high-velocity and ballistic impact. In low-velocity impact, the contact force duration is long compared to the time it takes the transverse shear wave travel to reach the plate boundary. Many waves reflect back and forth across the side dimension of the panel. In high-velocity impact, the contact force duration is much shorter than the transverse shear wave travel time through the panel. Usually high-velocity impact is the same with perforation and localized damage of the panel. Ballistic impact deals only with through-thickness wave propagation. During ballistic impact, there is complete perforation of the panel with little or no panel deformation. The contact force duration is approximately the wave travel time through the panel thickness. Ballistic impact usually involves the study of penetration mechanics. Low-velocity High-velocity Ballistic Impact The projectile to panel mass ratio will control whether wave propagation effect dominates the panel impact response and then suggested that a mass ratio be use as a parameter to determine impact response. It was shown that small mass impacts produce more damage than high-mass impacts having same kinetic energy. While small-mass impacts were defined by wave-controlled response, large mass impacts were defined by boundary-controlled response. Common examples of low-velocity impact are of bird strikes, collision with floating object, and dropped tools, may cause damage. Underwater blast or debris from a faraway explosion and air was considered as a high-velocity impact situation. Examples of ballistic impact would be a bullet or fragments from a nearby explosion hitting the panel. Another important factor governing the impact on composite structures is the ballistic limit. The ballistic limit is defined as the highest velocity of the projectile to cause perforation. When the residual velocity (exit) of the projectile is zero, then the initial velocity of the projectile that causes perforation is the ballistic limit of the sandwich panel. The ballistic limit may be calculate analytically or determined experimentally. In the experimental method, sandwich panels are shoot with projectiles over narrow range of velocities to either just cause penetration or to just perforate the panel. There exists a striking velocity at which 50% of the panels are completely perforate above this value and remaining 50% are partly penetrate below this value. This striking velocity is expresse as V50, which is the ballistic limit of the panel. In the analytical approach, the ballistic limit is determined by the conservation of energy principle. The approach is complex because it inc ludes a variety of factors like core thickness, facesheet thickness, shape of the projectile, core crushing stress, and so on. 1.2 Problem Statement This topic was an expansion of the Wan Awis research. He has done only an experimental work. For impact application, we need to predict skin and core material thickness. Since impact phenomena depend on numerous parameters such as material properties or projectile geometry, a numerical model, validated experimentally, is necessary to allow the study of the influence of several parameters without making costly experimental tests. This will definitely enhance the development of our military technology and achievements in the future because of the ability of this software to cut production cost and time consuming of the experimental work. The numerical figures have been compared to modal test results aiming mainly to validate the studies. Simulation based on finite element analysis (FEA) must not exceed  ± 15% error or this simulation could be claimed not acceptable. 1.3 Objective To simulate the damage of composite sandwich structures subjected to high-velocity impact using finite element analysis. To determine the energy absorption capability of the components on the behavior of the sandwich panel under impact load using ANSYS AUTODYN 13.0 To validate a numerical model with actual experiment. 1.4 Scope of Works To characterize a mechanical behavior of carbon fiber panel by using tensile and determine the fiber volume force and density. Design and validate the numerical model. Conduct a ballistic impact test simulation. Using the experiments data to calculate the energy absorption on the impact. CHAPTER 2 LITERATURE REVIEW 2.1 Introduction A great deal of research has been conducted in the area of impact of composite structures. In this chapter, previous work done on the impact response of laminated composite plates and composite sandwich panels will be reviewed. 2.2 Impact of Composite Laminates A detail study of impact of composite laminates in the three impact regimes ballistic impact, low-velocity and high-velocity is presented in this section. 2.2.1 Low-velocity Impact Abrate, 1998 give a specific review on different analytical models of impact on composite laminates. He classified impact models into four groups: impact on infinite plate model, energy balance models, spring-mass models, and complete models. In the energy balance model, the initial kinetic energy of the projectile is used to calculate the deformation of the composite laminate. The velocity of the projectile reaches zero at the maximum deflection of the composite laminate. At this point, all of the kinetic energy of the projectile is converted to strain energy needed to deform the composite laminate. Energy balance model assumes that the structure behaves in quasi-static manner. The time history of force and deflection are obtained using the spring-mass model representing the composite laminate. The model shown in Figure 2.1 consists of nonlinear contact stiffness (K), one spring representing the linear stiffness of the structure (Kbs), another spring for the nonlinear membrane stiff ness (Km), effective mass of the structure (M2) as well as the mass of the projectile (M1). Equations of motion are written from a free body diagram. The infinite plate model is used when the deformation wavefront has not reached the boundary but if the wave reaches the plate boundary then this model is not an appropriate one to use. In the complete model, the dynamics of the structure and projectile are taken into explanation. Appropriate plate theory has to be selected and used. In many cases the classical plate theory can be used but when transverse shear deformations become significant, higher-order theories must be used. One of the earliest studies on the impact of composite laminates was by Goldsmith et al, 1995, who conducted high-velocity and quasi-static impact tests on carbon-fiber laminates by using a cylindro-conical projectile. Three different specimen of varying thickness were considered. Energy balance principle was used to predict the dynamic penetration energy, static penetration energy, and also the ballistic limit of the composite laminate. The fiber failure accounted for most of the energy absorbed. The predicted theoretical energy was in good agreement with measured energy for thin laminates but not for the thick laminates. This was approved to the fact that transverse shear deformation played an important responsibility in thick laminates subjected to low-velocity impact. The effect of transverse shear deformation was not dominant due to its quick occurrence in the high-velocity impact of laminates. Therefore, the predicted energy in the dynamic case was always close to but less than the measured energy for the thin and thick laminates. The predicted ballistic limit was less than measured values due to the nonlinear factors. Cantwell, 2007 studied the influence of target geometry in the low-velocity impact of composite laminate. The tests were performed on GFRP plates with hemispherical indenter on either circular or square supports. He used energy-balance model to predict the plate deflection and the delamination area of the laminated structure. His study stated that there is little or no influence of target geometry on the failure modes. It also suggested that delamination was dependent on interlaminar shear stress and increasing the plate diameter required more energy for damage initiation. Hou et al., 2000 predicted impact damage in composite laminates using LSDYNA 3D. The numerical results were compared to experimental results on low-velocity impact on composite laminate with an initial velocity of 7.08 m/s The Chang-Chang failure criteria was modified taking the shear stress into consideration and the model was implemented in DYNA 3D. 2.2.2 High-velocity Impact In 1988, Cantwell performed high-velocity impact tests of CFRP laminates with 6 mm diameter, 1g steel ball as the projectile. The influence of fiber stacking sequence and target geometry was study. The experiments reveal that varying the target geometry had no significance on initial damage caused. While the damage initiated in the distal facesheet in thin laminates, however, in thick laminates it initiated from incident facesheet. Zhao et al., 2007 investigated the failure modes in composite laminates subjected to high-velocity impact. Three different laminates were subject to impact by hemispherical projectile in the range of 10-300 m/s. An energy balance was considered and equations for residual velocity for the laminates were given in terms of the mass of the projectile and striking velocity. The thickness and stacking sequence were finding to play an important role in the energy absorption. Cheng et al., 2007 developed an analytical model based on the spring-mass model for high-velocity impact of a blunt ended and a sharp-ended projectile on thick composite laminates. They considered the effect of moving boundary due to the propagation of shear wave. The analysis was modeled using series of quasi-static events. At the end of each quasi-static step, the failed layers were remove based on punch shear damage and fiber damage criteria, and the wave front was moved outwards. While the first spring stiffness constant was measure based on the penetration depth of the projectile, the second spring stiffness constant was measured based on the bottom node of the plate. 2.2.3 Ballistic Impact Silva et al., 2005 performed numerical simulations of ballistic impact on thin Kevlar 29 composite laminates using a fragment-simulating projectile. The laminate material model was simulating using AUTODYN and the projectile was modeled using Johnson-Cook strength model. Finite element mesh for both laminate and projectile was generating using True Grid. Accurate predictions of ballistic limit (V50) and the failure modes were made. Ballistic limit is the minimum velocity of impact at which a given projectile just perforates a given target. On occasion, the term is also used to identify the maximum impact velocity at which the projectile can penetrate into the target with perforation. It is often defined statistically as the impact velocity for which the projectile has a 50% probability of perforating the target; it is then denoted by V50. Guild et al., 2007 conducted numerical simulations of ballistic impact on composite laminates and compared them with experimental results. The laminates were made of E-glass/vinyl ester resin with varying thickness and ball bearings of varying mass were use as projectiles. The damage modes included fiber failure, matrix failure, penetration, and delamination. Hashin failure criteria was use to determine the damage mode. Delamination was modeled using an interface between the two plies. As the force increased between two nodes above the specified value, the nodes were untied and the delamination increased. The ballistic limit from experiments was in good agreement with numerical results Naik et al., 2008 studied the ballistic impact behavior of thick composites. E-glass/epoxy laminates of varying thickness were subject to high-velocity impact. The effects of projectile diameter, projectile mass and laminate thickness on the ballistic limit were studied. Wave theory and an energy balance were use to predict the ballistic limit of the laminate. The contact duration of the projectile with the laminate was maximum when the initial velocity was equal to ballistic limit and decreased when the initial velocity increased beyond the ballistic limit. Deka et al., 2008 conducted ballisitic impact on E-glass/polypropylene composite laminates with cylinder-shaped projectiles. The experimental results were validating with numerical analysis using LS-DYNA. Although the laminate was modeling in Hypermesh, LS-DYNA was used to analyze failure mechanisms. The analytical model was base on energy conservation and failure in the numerical analysis was predicted based on Hashins failure criteria. 2.3 Impact of Composite Sandwich Panels In this section, a detail study of impact of composite sandwich panels in the three impact regimes low-velocity, high-velocity and ballistic impact is presented. 2.3.1 Low-velocity Impact Mines et al., 1998 investigated quasi-static loading and low-velocity impact behavior on two different composite sandwich panels. While the first panel was made up of E-glass/vinyl ester skin and Coremat ® core, the second panel was made of Eglass/epoxy skin and aluminium honeycomb core. The first panel with Coremat ® core had failed in the sequence of core shear, debonding, and distal facesheet damage and incident facesheet failure. The second panel failed by core shear, debonding, incident facesheet failure and then distal facesheet failure later. In the low-velocity impact tests, the failure pattern remained the same in both the panels as of the quasi-static tests. The core properties and impact velocity govern the energy absorption capability of the sandwich panel. Wen et al., 1998 investigated the penetration and perforation of composite laminates and sandwich panels under quasi-static, drop-weight and ballistic impact tests by flat-faced, hemispherical-ended and conical-nosed indenters/projectiles. They categorized the impact on laminates and sandwich panels into low-velocity impact and wave-dominated (high-velocity/ballistic impact) response. It was also stated in the research that sandwich panels subjected to low-velocity impact have similar load-displacement characteristics as of quasi-static loading case. The perforation energy required by flat faced projectile was more than hemispherical-ended and conical shaped projectiles in high-velocity impact. Schubel et al., 2005 investigated quasi-static and low-velocity impact behavior of sandwich panels with woven carbon/epoxy facesheets and PVC foam. The low-velocity impact model behaved similar to quasi-static loading case when loads and strain levels were same. The static indentation response was compared to the numerical results obtained using ABAQUS and were in good agreement. A membrane solution, assuming membrane in the core affected region and plate on elastic foundation in the rest of sandwich panel was in poor agreement with the numerical results. Hoo Fatt et al., 2001, developed static and dynamic models of sandwich panels subjected to low-velocity impact. They investigated the behavior of sandwich panels having carbon/epoxy skins and a Nomex honeycomb core with a hemispherical indenter under various support conditions such as simply supported, fully clamped, and rigidly supported. Spring-mass models were considered to determine the load-displacement curve. They also investigated the damage initiation of sandwich panels under low-velocity impact loading. The initial mode of damage depended upon the panel support conditions, projectile nose shape, geometry of the specimens, and material properties of the facesheet and core. Various failure patterns were studied and solutions based on them were derived separately. The analytical solution for the ballistic limit was also found and results for thick laminates were in better agreement than thin laminates. Suvorov et al., 2005 performed numerical analysis on sandwich panels with foam core and studied the effect of interlayer in between the top facesheet and foam core. The foam core was modeled as crushable foam in ABAQUS. While the polyurethane (PUR) interlayer reduced the deformations in both the core and the composite facesheets, the elastomeric foam (EF) interlayer offered a better protection for the foam core alone. Besant et al., 2001 performed numerical analysis on sandwich panels with aluminium honeycomb core. The metal honeycomb core was modeled as elastic perfectly plastic material. A quadratic yield criterion was proposed for the core material, which included both normal and transverse shear stresses. The importance of core plasticity in finite element analysis was explained. 2.3.2 High-velocity Impact A great deal of work has been done in the area of low-velocity impact of laminates and sandwich panels and high-velocity impact of laminates but limited work has been presented in the domain of high-velocity and ballistic impact of sandwich panels. The following describes some recent studies on the high-velocity impact of composite sandwich panels Velmurugan et al., 2006 studied the projectile impact on composite sandwich panels in the range of 30-100 m/s. The sandwich models in this study were not the typical sandwich panels in the conventional sense. They had a core height comparable to the facesheet thickness and acted as a bonding agent between the facesheets. Energy-balance model was used to determine the ballistic limit of three different sandwich panels. They assumed the sandwich panel as a single plate since the foam layer was thin and comparable to facesheet thickness. Also uniform failure mechanism along the through thickness direction was assumed in their model. Skvortsov et al., 2003 developed an analytical model using energy-balance principle to determine the ballistic limit of composite sandwich panels subjected to high velocity impact. Two different sandwich panels were subjected to high velocity impact using three different projectiles. These tests were conducted on simply supported and rigidly supported boundary conditions, and the initial velocity was varied in the range of 70-95 m/s. The predicted panel energy was close to the experimental values and the error was due to the strain-rate effects, plastic behavior, and hardening phenomena, which are not consider in the analysis. 2.3.3 Ballistic Impact Kepler et al., 2007 conducted ballistic impact on sandwich panels consisting of GFRP plates and Divinycell H80 core, with three different projectiles. Lumped spring mass model was use to calculate force histories and panel response. Concentric rings connected by shear springs represented the sandwich panel. In this model, core shear deformation was assumed as the single significant contributor to the sandwich panel stiffness. The facesheet orthotropic was neglected in the panel response. Four different force histories: constant force, triangular force, sine series, and combination of sine and triangular force were used to calculate the energy loss in the panel. Of these, triangular and combined force gave results in better agreement with experimental results. 2.4 Aluminium Honeycomb For design and construction of lightweight transportation systems such as satellites, aircraft, high-speed trains and fast ferries, structural weight saving is one of the major considerations. To meet this requirement, sandwich construction is frequently use instead of increasing material thickness. This type of construction consists of thin two facing layers separated by a core material. Potential materials for sandwich facings are aluminium alloys, high tensile steels, titanium, and composites depending on the specific mission requirement. Several types of core shapes and core material are been applied to the construction of sandwich structures. Among them, the honeycomb core that consists of very thin foils in the form of hexagonal cells perpendicular to the facings is the most popular. A sandwich construction provides excellent structural efficiency, i.e., with high ratio of strength to weight. Other advantages offered by sandwich construction are elimination of welding, superior insulating qualities and design versatility. Even if the concept of sandwich construction is not very new, it has primarily been adopt for non-strength part of structures in the last decade. This is because there are a variety of problem areas to be overcome when the sandwich construction is applied to design of dynamically loaded structures. Other investigators have previously carried out noteworthy theoretical and experimental studies on linear elastic and nonlinear behavior of aluminium sandwich panels. Kelsey et al., 1985 derived simple theoretical expressions of the shear modulus of honeycomb sandwich cores. Witherell, 1977 performed an extensive theoretical study for structural design of an air cushion vehicle hull structure using aluminium honeycomb sandwich panels. Okuto et al., 1991 showed the validity of the so-called equivalent plate thickness method in which a honeycomb sandwich panel subjected to inplane loads is approximately replaced by a single skin panel with equivalent plate thickness. Kobayashi et al., 1994, studied Elasto plastic bending behavior of sandwich panels. An experimental study was undertaken by Yeh et al., 1991 to investigate the buckling strength characteristics of aluminium honeycomb sandwich panels in axial compression. Kunimo et al., 1989 both, have studied the characteristics of the energy absorption capacity of bare honeycomb cores under lateral crushing loads theoretically and experimentally. 2.5 Ballistic Limit The ballistic limit may also be defined as the maximum velocity at which a particular projectile is expected to consistently fail to penetrate armor of given thickness and physical properties at a specified angle of obliquity. Because of the expense of firing tests and the impossibility of controlling striking velocity precisely, plus the existence of a zone of mixed results in which a projectile may completely penetrate or only partially penetrate under apparently identical conditions, statistical approaches are necessary, based upon limited firings. Certain approaches lead to approximation of the V50 Point, that is, the velocity at which complete penetration and incomplete penetration are equally likely to occur. Other methods attempt to approximate the V0 Point, that is, the maximum velocity at which no complete penetration will occur 2.6 Energy Absorption Mechanism of Composite Materials The research was done by Naik and Shrirao at 2004. Impact loads can be categorized into three categories which is low-velocity impact, high-velocity impact and hyper-velocity impact. This classification is made because of change in projectiles velocity will result in different mechanisms in terms of energy transfer between projectile and target, energy dissipation and damage propagation mechanism. Basically, ballistic impact is considered as low-mass high velocity impact. In this impact event, a low-mass projectile is launched by source into target at high velocity. It is unlike low-velocity impact that involved high-mass impactor impacting a target at low velocity. In view of the fact that ballistic impact is high velocity event, the effect is localized and near to impact location. According to Naik et al. (2006), seven possible energy absorbing mechanisms occur at the target during ballistic impact. Those mechanisms are cone formation at the back face of the target, deformation of secondary yarns, tension in primary yarns/fibres, delamination, matrix cracking, shear plugging and friction between the projectile and the target. Then, the researchers formulated all these energies into equation whereby the total energy absorbed by the target is summation of kinetic energy of moving cone EKE, shear plugging ESP, deformation of secondary yarns ED, tensile failure of primary yarns ETF, delamination EDL, matrix cracking EMC and friction energy EF. ETOTALi = EKEi + ESPi + EDi + ETFi + EDLi + EMCi + EFi Mines et al. (1999) identified three modes of energy absorption when analysed the ballistic perforation of composites with different shape of projectile. These energy absorptions are local perforation, delamination and friction between the missile and the target. However, the contribution of friction between the missile and the target in energy absorption is low compared to the other two. In terms of local perforation, three through-thickness regimes can be identified, namely: I shear failure, II tensile failure and III tensile failure and delamination. Out of these three regimes, the through-thickness perforation failure is dominated by shear failure. Similar observation has been made by other researcher for thick graphite epoxy laminates whereby the perforation failure is dominated by shear failure. The third main energy absorption mechanism is delamination. Delamination can propagate under Mode I (tensile) and Mode II (shear) loading and each mode can dominate each other depend ing on structural configuration of the composite as well as material properties. Therefore, it can be predicted that the total perforation energy is a summation of energy absorption due to local perforation, delamination and friction between the missile and the target. Epred = Ef + Esh + Edl where Ef = friction between the missile and the target; Esh = local perforation; Edl = delamination Apart from that, Morye et al. (2000) has studied energy absorption mechanism in thermoplastic fibre reinforced composites through experimental and analytical prediction. They considered three mechanisms that involved in absorbing energy by composite materials upon ballistic impact. The three energy absorption mechanisms are tensile failure of primary yarns, elastic deformation of secondary yarns and the third mechanism is kinetic energy of cone formed at back face of composite materials. They concluded that kinetic energy of the moving cone had a dominant effect as energy absorption mechanism for composite materials. However, they neglected a delamination as one of the factor contributed to the failure of composite materials during ballistic impact. 2.7 Kinetic Energy Equation Kinetic energy (KE) attack is a penetration of the residual energy of a projectile. A projectile can give a certain amount of energy to attack and damage a vehicle if the projectile sufficient residual energy when it arrive at the target. This residual is very important to overmatch the capability and strength of the target material to resist penetration, and then it will penetrate. Kinetic energy shot can be presented with the simple law of physic. K.E =  ½ Mprojectile Vprojectile2 Increasing the mass (Mprojectile) of the shot increases its energy, but the real payoff comes from increasing its velocity (Vprojectile). If the diameter of the shot fills the whole gun barrel, the projectile becomes heavier and difficult to accelerate to required velocity with the length of the barrel. Additionally, a large diameter solid shot will provide more energy to penetrate the armour plate compared to a projectile which has the same mass but a smaller diameter. Consequently, the larger shot is not only less effective at the target but it is difficult to give it the necessary velocity. According to Chang et al., 1990, depth of penetration at the target will depend not only on residual energy, but also on shape and size of the projectile. The curve shape at the projectile head is more important, as it must not only able to pierce the armour but the shoulders of the shot must also support the remainder so that it does not break up on its way through the armour. If for given mass the diameter of the shot is reduced and is length increased, then for the same residual energy the shot will penetrate further, as it is working on a smaller cross section area of armour. The ratio of length-to-diameter is called slenderness ratio. Any projectile with ratio in excess of 7:1 cannot be spin stabilized it is not until they reach a ratio approximately 20:1 that they can call long rod. So, based on those discussions above, we can conclude that energy absorption can be performed by this relation Eabsor = Ein Eout = [ ½ Mprojectile Vin2] [ ½ Mprojectile Vout2] =  ½ Mprojectile (Vin2 Vout2) So, Eabsorbed =  ½ Mprojectile (Vin2 Vout2) 2.8 Tsai-Hill Failure Criterion Hill, 1950 proposed a yield criterion for orthotropic materials: G+HÏÆ'12+F+HÏÆ'22+F+GÏÆ'32-2HÏÆ'1ÏÆ'2-2GÏÆ'1ÏÆ'3-2FÏÆ'2ÏÆ'3+2LÏ„232+2MÏ„132+2NÏ„122=1 This orthotropic yield criterion will be used as an orthotropic strength or failure criterion in the spirit of both criteria being limits of linear elastic behavior. Thus, Hills yield stresses F, G, H, L, M and N will be regarded as failure strengths. Hills criterion is an extension of von Mises yield criterion. The von Mises criterion, in turn, can be related to the amount of energy that is used to distort the isotropic body rather than to change its volume. However, distortion cannot be separated from dilatation in orthotropic materials, so Equation 2.8 is not related to distortional energy. Unfortunately, some authors still mistakenly call the criterion of Tsai-Hill a distortional energy failure criterion. The failure strength parameters F, G, H, L, M and N were related to the usual failure strength X, Y, and S for a lamina by Tsai. If only Ï„12 acts on the body, then, because its maximum value is S, 2N=1S2 Similarly, if only ÏÆ'1 acts on the body, then G+H=1X2 And if only ÏÆ'2 acts, then F+H=1Y2 If the strength in the 3-direction is denoted by Z and only ÏÆ'3 acts, then F+G=1Z2 Then, upon combination of Equations (2.10), (2.11) and (2.12), the following relations between F, G, H and X, Y, Z result: 2F=1Y2+1Z2-1X2 2G=1X2+1Z2-1Y2 2H=1X2+1Y2-1Z2 For plane stress in the 1-2 plane of a unidirectional lamina with fibers in the 1-direction, ÏÆ'3 = Ï„13 = Ï„23 = 0. However, from the cross sectional of such a lamina in Figure 2.3, Y = Z from the obvious geometrical symmetry of the material construction. Thus, Equation (2.8) leads to ÏÆ'12X2-ÏÆ'1ÏÆ'2X2+ÏÆ'22Y2+Ï„122S2=1 as the governing