A review of some aspects of fatigue crack growth under variable amplitute loading |
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| Authors: | W Geary |
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| Affiliation: | The Research and Laboratory Services, Division of the Health and Safety Executive, UK |
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| Abstract: | The literature on some aspects of the influence of variable amplitude loading on fatigue crack growth has been reviewed. In particular the importance of residual stresses, fatigue crack closure, microstruture, geometry and environment on the fatigue crack growth of long, through-thickness cracks following overloads, underloads and overload-underload combinations in Mode 1 opening have been identified. Other behaviour, including the influence of temperature, frequency and the effects of mixed-mode loading, is beyond the scope of this review. Areas of work requiring further investigation have been proposed. |
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| Keywords: | fatigue variable amplitudde overloads underloads crack closure |
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