International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 08 | Aug 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 272 STUDY AND EFFECT OF ABRASIVE WEAR BEHAVIOR OF KEVLAR Mohammad Faran Jamal 1 , Dr. Md Shadab Khan 2 , Er. Abdul Ahed Khan 3 1Research Scholar, Department of Mechanical Engineering, Integral University, Lucknow, U.P., India 2,3 Associate Professor, Department of Mechanical Engineering, Integral University, Lucknow, U.P., India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Abrasive wear phenomena are simply caused by the passage of relatively hard particles or asperities over a surface. It directly affects the life of the component. A systematic study of abrasive wear of Kevlar has been carried out using a two body pin-on-disc wear machine. The objective of this study was to evaluate the abrasive wear of Kevlar fiber (after mixing it with epoxy resin) by grinding it at constant load of 10N but at different rpm. A Kevlar often described as being "five times stronger than steel on an equal weight basis". In particular, up to date aramid have been extensively used in personal protection, tires, equipment, shoes, building construction and marine application by virtue of their very strong tensile strength. So, in this thesis a study of abrasive wear of Kevlar at different speed were given to analyze the possibility of wear. A review of abrasive wear behavior of Kevlar using different wear rate speed has been discussed in this thesis. Mainly focus on the varying wear condition during varying rpm. As we all know that wear is very important parameter which directly affects the life of a component. The goal of this study was to evaluate abrasive wear only. The result of the study indicates several measuring wear rate technique till date. It is concluded that-  Wear volume increases with increasing applied load.  The loss in mass is maximum at zero degree (horizontal position) for a particular load  At horizontal position (zero degree) two body abrasion takes place most of the time. Key Words: Abrasive wear, Kevlar fibre, Epoxy resin, Aramid, Asperities 1. INTRODUCTION A synthetic material Kevlar® is a plastic strong enough to stop bullets and knives—often described as being "five times stronger than steel on an equal weight basis. Unlike most plastics it does not melt: it's reasonably good at withstanding temperatures and decomposes only at about 450°C (850°F)." Kevlar is simply a super-strong plastic. Kevlar's amazing properties are partly due to its internal structure (how its molecules are naturally arranged in regular, parallel lines) and partly due to the way it's made into fibers that are knitted together. It's a proprietary material made only by the DuPont™ chemical company and it comes in two main varieties called Kevlar 29 and Kevlar 49 (other varieties are made for special applications). 1.1 Properties of Kevlar  It's strong but relatively light. The specific tensile strength (stretching or pulling strength) of both Kevlar 29 and Kevlar 49 is over eight times greater than that of steel wire.  Unlike its sister material, Nomex, Kevlar can be ignited but burning usually stops when the heat source is removed.  Very low temperatures have no effect on Kevlar: DuPont found "no embrittlement or degradation" down to −ͳ9͸°C ȋ−͵ʹͲ°FȌ.  Kevlar can resist attacks from many different chemicals, though long exposure to strong acids or bases will degrade it over time. There are two main stages involved in making Kevlar. First you have to produce the basic plastic from which Kevlar is made (a chemical called poly- paraphenylene-terephthalamide no wonder they call it Kevlar). Second, you have to turn it into strong fibers. So the first step is all about chemistry; the second one is about turning your chemical product into a more useful, practical material. Fig-1 Kevlar's monomer: C=carbon, H=hydrogen, O=oyxgen, N=nitrogen, — is a single chemical bond, and = is a double bond. This basic building block is repeated over and over again in the very long chains that make up the Kevlar polymer.