Experimental investigation of the effect of double cold expansion on the residual stresses distribution and on the fatigue life of rivet hole

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• 作者：Mohamed Elajrami ; Ramzi Miloud…
• 关键词：Rivet holes ; Double cold expansion ; Residual stresses ; Crack initiation ; Crack propagation ; Fatigue life
• 刊名：Journal of the Brazilian Society of Mechanical Sciences and Engineering
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：38
• 期：8
• 页码：2527-2532
• 全文大小：736 KB
• 刊物主题：Mechanical Engineering;
• 出版者：Springer Berlin Heidelberg
• ISSN：1806-3691
• 卷排序：38

文摘

The use of riveting as an assembly technique, especially in the aeronautical construction, requires the implementation of several holes in aluminium alloy sheets, which leads to a stress localization in the drilled zones and affect the fatigue life. Studies have shown the beneficial effect of the cold expansion technique in obtaining better fatigue life of rivet holes, but only few of them have examined the effect of double cold expansion. This paper presents the results of an experimental work which aimed to evaluate the new enhancement of fatigue life by double cold expansion process of rivet holes.