Twenty low cycle fatigue tests were performed on aluminum tension specimens of Al 2024T351, and the life to failure summarized in Table 1. Stress-strain curves similar to Figure 1 were obtained, and the inelastic dissipation per load reversal was estimated from the area enclosed in the stress loops and is listed in Table 1. Question 1: Three different fatigue models have been proposed to describe the LCF failure data listed in Table 1. These are: i. Coffin-Manson based power law relation ( …
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