Bending Fatigue Investigation under Variable Load Conditions on Case Carburized Gears


Variable load spectrum tests are carried out at different load levels in a step program and at random loading. The results of step programmed tests show a substantial influence of the period of the programmed subsequence of fatigue life. Fatigue life decreases when the subsequence period is shortened. With substantially shortened subsequences in step programmed test nearly the same fatigue life is reached as in random load tests.
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