Fatigue and Durability of Metals at High Temperatures
Chapter 4: Strain-Range Conversion—An Extended View of Strain-Range Partitioning
This chapter demonstrates the versatility of the strain-range partitioning method and its application to creep-fatigue problems involving complex loading histories. It begins with a derivation showing that it is possible to assess the damage of hysteresis loops combining two or more strain ranges using generic loops based on fundamental data. It then explains how to treat problems involving sequential loading with both healing and damage cycles and presents a general solution for combining two loops with arbitrary amounts of the four strain-range components. The chapter also derives closed-form equations that account for interactions among any number of adjacent loops and can be used, through successive application, to analyze any loading history.
Strain-Range Conversion—An Extended View of Strain-Range Partitioning, Fatigue and Durability of Metals at High Temperatures, By S.S. Manson, G.R. Halford, ASM International, 2009, p 69–82, https://doi.org/10.31399/asm.tb.fdmht.t52060069
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