Quantitative analysis of overload effect at crack tip on crack growth rate of 7005 aluminum alloy
Source abstract
Abstract
Abstract A new fatigue crack growth rate model is proposed considering overload effect, which could quantitatively describe the crack growth rate considering overload from variable-amplitude load. Residual stress intensity factor K q caused by overload was put forward by defining stress ratio R c and obtained by XFEM. Three typical overload situations are studied and reappearance of the threshold stage was elaborated by compact tension tests. The effective scope of the overload is the width of the plastic zone, within the region the stress ratio rises quickly and then become stable. Threshold stage reappeared only when overloads by the higher preload effect were conserved.
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Research context
OpenAlex topics: Fatigue and fracture mechanics · Metal Forming Simulation Techniques · Advanced Welding Techniques Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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