Analytical Prediction of Fatigue Life on Aluminum Alloy Die Castings for High Performance Parts

Abstract

In aluminum alloy die castings under cyclic load, a fatigue crack initiates at casting defect and propagates according to Δ-da/dN relation. The prediction method of fatigue life of aluminum alloy die castings under complex cyclic load has been proposed theoretically and verified experimentally. The paper shows that the prediction method is a so effective to a part with complicated shape as well as a round bar specimen.