Fatigue-life estimation and material selection for commercialpurity aluminum sheets

Abstract

This study had two fundamental purposes: fatigue-life estimation by statisticalanalysis of fatigue test data of cold-rolled commercial-purity aluminum sheetsand material selection in HCF and LCF regions. Aluminum alloys 1100 and 1050were cut in the rolling direction and long transverse direction. The specimenswere subjected to cantilever-type plane bending fatigue tests using a fullyreversed stress rate at room temperature. A two-parameter Weibull distributionwas used for statistical analysis. S–N curves with 12 different reliability levelsbetween 0.01 and 0.99 and empirical formulas were obtained for fatigue-lifeestimation. The reliability graphs were obtained for material selection.