Camshaft is used in the engine for transfers' motion to inlet & exhaust valve. If transfer of motion is not proper then the strokes of the engine will not done in proper way. It also effects on performance of engine. To make work of camshaft in precise way, it is require in order to design a good mechanism linkage of camshaft. To design good mechanism linkages the dynamic behavior of the components must be considered, this includes the mathematical behavior of physical model . In this case, introduction of two mass, single degree of freedom and multiple degree of freedom dynamic models of cam follower systems are studied. In four strokes engine one of the most important component is camshaft, such a important part and that over the years subject of extensive research. In this study, causes of fracture of camshaft are discuses. By using scanning electron microscopy and finite element analysis methods are used for fracture analysis of camshaft
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