Fatigue and Durability of Structural Materials
Chapter 5: Multiaxial Fatigue
This chapter reviews the theories that have emerged from the widespread study of multiaxial fatigue and assesses their validity using data from different sources. It begins by providing background on the studies that the chapter draws on, pointing out differences in methodology and explaining how they influence test results and data. It then discusses the concept of critical planes and how they are used to correlate the effects of uniaxial loading with multiaxial fatigue behaviors. The section that follows covers the various methods used to analyze multiaxial fatigue and identifies one that best treats the general case. The chapter also defines two important factors, the triaxiality factor and the multiaxiality factor, and presents the results of an extensive study to determine how the two factors are related. One of the more interesting findings is that the atomic structure of a material has a significant effect on which theory best describes its fatigue behavior.
Multiaxial Fatigue, Fatigue and Durability of Structural Materials, By S.S. Manson, G.R. Halford, ASM International, 2006, p 105–121, https://doi.org/10.31399/asm.tb.fdsm.t69870105
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