Determine the Fatigue behavior of engine damper caps screw bolt
نویسنده
چکیده
In this paper, fatigue strength of the engine damper cap screw bolt is determined. Engine damper cap screw is critical fastener. Critical fastener is a term used to describe a cap screw that, upon failure, causes immediate engine shutdown or possible harm to person. So, determination of fatigue strength is important. S-N method is used for cap screw fatigue strength determination by testing number of samples at different alternating load keeping mean load constant. Alternating load is increased until cap screws begin to fail. But for measurement of axial load in fasteners, ultrasonic bolt gauging method is used. It has been observed that fatigue failure takes place on the thread of cap screw bolt due to high stress concentration on the thread.
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