In this present work, the behavior of AA7349 aluminum alloy under constant and cumulative creep-fatigue interaction has been studied by using an electrical system designed and built in order to investigate creep-fatigue interaction at different stress levels and temperatures. An hour glass shaped specimen of AA7349 aluminum alloy has been subjected to a constant and variable creep-fatigue tests performed under rotating bending loading and stress control at stress ratio R=-1. The results of the creep -fatigue life have been studied by Miner rule and compared with the proposed and experimental methods. It was shown that the Miner rule and proposed model gave reasonable results and they are in a good agreement with the experimental fatigue lifetimes.
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