Experimental evaluation of shielding effect on growing fatigue cracks under overloads using ESPI
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- 作者：J.M. Vasco-Olmoa ; jvasco@ujaen.es" class="auth_mail" title="E-mail the corresponding author ; F.A. Dí ; aza ; E.A. Pattersonb
- 关键词：Fatigue crack ; Plasticity induced shielding ; Overload ; Stress intensity factor ; Electronic speckle pattern interferometry
- 刊名：International Journal of Fatigue
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：83
- 期：part_P2
- 页码：117-126
- 全文大小：2714 K
文摘
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First time that ESPI is used to quantify the effect of shielding and overloads.
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Crack opening loads at the overload event proportional to the overload magnitude.
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Post-overload retardation of crack growth proportional to the overload magnitude.
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CJP model useful in fracture mechanics when plasticity plays a significant role.
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Results remove some controversy associated with crack closure by quantitative data.