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Fatigue has been the subject of innumerable books, papers, and studies since the late 1800s and continues to be a major factor in component failure with an estimated 90% of all mechanical failures being attributed to fatigue (Dieter, Mechanical metallurgy, 1976). The classic fatigue “thumbnail” often visible to the naked eye may allege fatigue, but microscopic striations—tiny ridges that bear immutable...
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