Strength of Adhesives in a lap joint Essay Example for Free

Strength of Adhesives in a lap joint Essay Strength of Adhesives in a lap joint Introduction   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Shear force refers to any internal force which acts in a perpendicular direction on a substance to its extension. For example air pressure along an air plane wing (Krenk, 2007). Compression test involves a measuring instrument such as leak-down tester used in determining internal condition of combustion engines; it’s done by compressing air into the cylinder and recording the rate at which air is leaking out.eg testing the condition of racing cars engines and other engines of vehicles with high performance (Chang, 2000). Double lap configuration refers to configuration of different timbers using PVA. Advantages of PVA Toxicity; its non toxic which can be handled without any danger but not healthy for consumption. It doesn’t have gassy fumes thus no need of ventilation in rooms which are closed or during cold days. Drying time; PVA dries up quickly. Normally, if applied in little amount it makes a thin coat which takes less than 30mins to dry up. For heavier applications it can take a lot of time of about 24hrs with other conditions being applied such as pressure. Reversible; its easily reversed using water. It implies that a material is attached using PVA, it can be removed using water such as in archival purposes (Merrick, 2005). Clean up; it can be cleaned up easily using soap and water without applying other toxic thinners. When dry, it can be removed by peel ding without causing damage to the surface. Characteristics of PVA PVA particles when dry they have microscopic appearances which are similar. Dry PVA particles are similar and significantly increase in size during nonionic contrast suspension. When each PVA group is measured and parameters compared using software program in a microcomputer, they present a non-consistent histogram. Initially their particles were obtained through rasping Avalon block. Their particles are related to fluid viscosity effect or their behavior in solution. This makes them to be compressible and flexible in nature. Characteristics of resin based adhesives Durability; resin based adhesives are more durable compared to other adhesives such as synthetic Resin based adhesives made of cement are more superior to those of glass and zinc phosphate. They temporarily form synthetic adhesives when polyvinyl acetate is suspended. Most of resin based adhesives are derived from polymers where adhesives of good properties are shown. Resin based has strong adhesion forces which makes them more durable compared to other forms of adhesives (Vlieger, 1995). Resin based adhesives appears in different forms such water based and cement based adhesives. Advantages of Resin Based Adhesives Inflammable; resin based do not contain flammable solvents which makes them friendly to human beings. They don’t wear and are resistant to shrinkage when they have dried up. Resins based are of high quality compared to other forms of adhesives. Their different forms such water based are eco-friendly due to their non toxic nature. They are moisture resistant.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Double lap configuration is configured using access of light weight where adhesive forces are required in joining their respective wireless controller LAN. In conclusion, PVA particles are non uniform which have weak farces of adhesion. This affects the lap joints making them appear very weak. Resin based is known to be more durable making the relationship between lap joints stronger. References Chang, J. Y. (2000). Biopolymers, PVA hydrogels, anionic polymerisation, nanocomposites. Berlin: Springer. Merrick, M. J. (2005). The behaviour of PVA adhesives in chairs. S.l.: Furniture Industry Research Association. Krenk, S. (2007). Beam theory stresses in an adhesive lapjoint. Roskilde, Denmark: Risà ¸ National Laboratory. Vlieger, H. (1995). Results of uniaxial and biaxial tests on riveted fuselage lapjoint specimens. Amsterdam: National Aerospace Laboratory NLR. Source document

Buddhism and the Matrix Essay -- essays research papers

The One In the film The Matrix Keanu Reeves plays Thomas A. Anderson, who is a man living a double life. One part of his life consists of working for a highly respectable software company. The second part of his life he is a hacker under the alias "Neo." One day Neo is approached by Morpheus (Laurence Fishburne) and is taught that everything he thought was real was actually The Matrix, a computer program developed by machines in order to use human beings as batteries. Morpheus has been searching his whole life for â€Å"the one† to end the war between the humans and machines. Morpheus feels Neo is the chosen one, the one who will set everyone free from the Matrix. Neo is reluctant to accept this responsibility, but through various mission and encounters he realizes that he is capable of this feat and allows himself to embody what is to be considered â€Å"the one.† Within the storyline of The Matrix there are many signs of Buddhism. The first of which is the idea of Samsara. Samsara is the process of death and rebirth, characterized by suffering, in which all beings are caught (Strong, 370). Suffering is a result of unawareness and yearning, which keeps humans locked in an illusion until they are able to recognize that their reality is false and they are able to renounce this false sense of self. This is related to the matrix because Morpheus explains it to be merely a â€Å"mental projection of your digital self,† and ...

Football as an Intramural Essay

Abstract Intramural sports present a fun way for students to spend their time at school, and provide an excellent opportunity to introduce themselves in the new world of college. Students get the chance to meet new people by playing against them in various sports such as softball, volleyball, and basketball. These sports are also co-ed, meaning that men and women can play on the same teams or against one another. Intramurals is also a great way to improve attendance or boost student’s motivation to improve their grades. However, there is only a select variety of options for sports. Most of the sports would fall under women’s sports, with their being softball over baseball and volleyball over football. There aren’t many options for men to get involved in intramurals with no men’s sports to play. Adding one sport that’s a men’s sport will give men more options in participating in intramurals. The addition of football may be what this school needs to get more people involved in intramural sports at Alexandria Technical and Community College (ATCC). With a chance for more men to participate, and more women to get involved in men’s sports, it’s a sport that cannot fail if the right conditions are met. Too much contact could be an issue, but if it were even touch football (2-hand touch), there wouldn’t be very many problems. Adding football to ATCC intramurals is what this school needs to not only offer more options for students, but to help attendance and boost student motivation to improve grades. It will be beneficial for the school, and fun for the students. 1. 0 Introduction Alexandria Technical and Community College is a great place to get to know other students. One of the ways to meet the students is by joining their intramural sports and getting on teams that compete against the other teams of the school. 1. 1 Problem With having intramural sports comes the privilege of choosing what you want to do with your time. However, there are not many options for intramural sports. There is softball and volleyball, just to name a couple, but not many options for the students. This may be why there are a lot of ATCC students not participating in intramurals. We believe that the addition of one particular sport will attract more students, and that sport is football. 2. 0 Discussion 2. 1 Benefits to ATCC One of the main focuses of ATCC is to get their students involved in the school and the community. One of the ways they stride for this goal is to encourage students to join in intramurals. Our idea is that if football is added to the intramural list, it may bring in more students to participate in intramural sports, and bring more students together. 2. 2 Benefits to Students According to the National Collegiate Athletic Association (NCAA) Proposition 48, students who participate in school activities and sports must maintain a GPA of 2. 0 on a 4. 0 scale [ (Begnaud, 2007) ]. With that being said, this would prove that students who participate in extracurricular activities would have to motivate themselves and push themselves to maintain a high enough GPA to still participate. This motivation would be beneficial to students, and with more students wanting to play football, this would motivate more students to succeed in school. So now the question is, â€Å"How do you know football is a popular sport? † Well, according to studies done by many colleges such as MSU Moorhead, football has been ranked the number one popular sport in the United States [ (Walter) ]. This means that given the choice, football would be the top pick for the majority of the nation. With that being said, if football is added to intramurals then students would choose it for their intramural and would be motivated to do well in school to be able to participate in intramurals. Figure 1. 1 2. 3 Effects on Attendance As was stated in section 2. 1, students would be more likely to do good in school because they must maintain a GPA of at least a 2. 0 on a 4. 0 scale. If students are to good in school, they must attend school and do well. Attendance is important to do good in school, so intramurals must effect attendance, right? This can be proven if the rules of the NCAA Proposition 48 are followed. 2. 4 Effects on Grades Again, the NCAA Proposition 48 proves that sports do have a major impact on grades, but only because they have to. Students must do good in school if they want to participate in intramurals. Figure 1. 2 2. 5 Right to Give Students a Choice in Sports According to the Constitution, we all have the right to free speech (Amendment 1). If this is true, then it should also give us all the right to a vote. So shouldn’t students be able to vote on whether or not to include football in intramurals? In addition to that, students should also have the right to vote on whether or not to choose if they want to play football as their intramural if it is added to intramurals. The point to be made here is that we all have a right to vote, so we feel that there should be a vote at ATCC on whether or not to add football to the list of intramurals. Our voices should be heard if there is something that we truly believe will benefit the people and the school better. 2. 6 Comparison to Schools with Football as an Intramural Sport It is very difficult to compare ATCC with other schools with intramural sports, and especially since ATCC doesn’t have football as an intramural. However, according to the following website, these are the community colleges that do include football as a sport of choice: http://en. wikipedia. org/wiki/List_of_community_college_football_programs This website gives all of the schools that have football as a sport of choice. On this list, some of the schools are also listed on the list of the top community colleges in the US. ATCC ranked #8 on the list, while St. Paul College ranked #1, and they do have football as a sport [ (Washington Monthly, 2010) ]. So, could football actually help our students do better in school? It appears that it could, since 57% of all men in colleges played football [ (Heinlien, 2007) ]. 3. 0 Conclusion In conclusion, due to the facts given in the above sections, we believe that students should be able to participate in a vote for football as an intramural at ATCC. Also, whether the vote happens or not, football should be added to the intramural list to improve student participation, and to improve not only attendance, but grades too. 4. 0 Appendix 5. 0 Glossary Intramural-involving only students in the same school or college. That’s the only word we feel the need to define 6. 0. Works Cited Begnaud, B. (2007, February 15). The Effect of Athletic Involvement on GPA. Retrieved November 28, 2012, from Yahoo Answers: http://voices. yahoo. com/the-effect-athletic-involvement-gpa-benefits-201277. html? cat=25 Heinlien, E. (2007, October 28). The Benefits of Intramural Sports. Retrieved November 29, 2012, from Helium: http://www. helium. com/items/670511-the-benefits-of-intramural-sports Mueller, J. (2012, February 16). Do Sports Have an Affect on GPA. Retrieved November 29, 2012, from Stat Crunch: http://www. statcrunch. com/5. 0/viewreport. php? reportid=23966 Walter, T. (n. d. ). How Do Professional Sports in the US Rank in Popularity. Retrieved December 1, 2012, from Wiki Answers: http://wiki. answers. com/Q/How_do_professional_sports_in_the_US_rank_in_popularity Washington Monthly. (2010). College Guide. Retrieved December 1, 2012, from Washington Monthly: http://www. washingtonmonthly. com/college_guide/rankings_2010/community_colleges. php.

The Drug War On Drugs - 1378 Words

In 2009 1,663,582 people were arrested for non-violent drug charges. These people’s lives are now forever changed because of a mistake they made. This mistake is continually made every single day and Americans are being punished in extreme ways for a non violent crime. The United States needs to decimalize all drugs because the drug war is costly, causes high incarceration rates, and isn’t effective as European drug solutions. In the 20th century, the United States government led a major renewed surge in drug prohibition called the War on Drugs, this started the US on a spiral that would harm us all. Since the war on drugs began under the administration of President Richard Nixon, the federal drug-fighting budget has increased from $100 million in 1970 to $15.1 billion in 2010, with a total cost estimated near 1 trillion dollars over 40 years (drug policy, 2015). The amount of money that the United States spends on drugs could be used in many better fields of government . A large argument against this is that this money has been used to help end drug use. If that statement is true, then the DEA is doing a poor job at ending drug use since drug use has gone up since the war has started. The financial cost of the drug war is not worth it due to progress not being made here in the United States. Now one argument against ending the drug war is that the DEA would lose its jobs and Americans would suffer, this is false because the jobs that DEA agents hold would shift fromShow MoreRelatedThe War On Drugs And Drugs Essay972 Words   |  4 PagesThe war on drugs have been a critical issue that has repeatedly held a great debate topic. It was in the 1906 when the first act against drug was put into effect with the Pure Food and Drug Act which required all over-the-counter medication to have label of its ingredients. 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