Failure Examples Study Including with timing belt, Constant Velocity Boot and Weather strip on a Car

Abstract - This paper is to study the examples for rubber damage and weaken reliability of timing belt, constant velocity joint boot and weather strip in vehicle. The first example, when the service man replaced the new timing-belt of rubber material, he assembled the belt that was weaken it's contact surface because of material transform. He knew the abnormally tearing failure by friction action between belt and sprocket. The second example, it certified the fact that the grease is leaked out boot protecting of constant velocity joint by split of rubber surface because of durability badness. The third example, the weather stripe took the minutely tearing because of damage produced the material transform by crack of chemistry change. It certified the production phenomenon of a tiny noise by coming with outside air because of overlapped the rubber of weather stripe when driving after closing the door. Therefore, the driver must always manage the rubber system part of vehicle. Key words : rubber, wear, timing belt, constant velocity joint boot, weather stripKIGAS Vol. 19, No. 1, pp 6~11, 2015 http://dx.doi.org/10.7842/kigas.2 015.19.1.6(Journal of the Korean Institute of Gas)