Fatigue Crack Growth Behavior of Aluminum Alloy under Three-Step Varying Loads

摘要

Fatigue crack growth behavior of aluminum alloy under three-step varying load was investigated, by correlating with the results observed under two-step varying load shown in authors' previous papers. The analytical crack growth law derived in authors' previous papers under two-step load conditions was modified to make it applicable to the results obtained in the present study. The estimated results based on the modified crack growth law well agree with the experimental results.