Fatigue assessment on butt welded splices in plates of different thicknesses

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• 作者：Liang Zong^a ; ^b ; Gang Shi^b ; ^{shigang@tsinghua.edu.cn} ; Yuan-Qing Wang^b ; Hui Zhou^c
• 关键词：Fatigue test ; Fatigue evaluation ; Butt welded splices in plates of different thicknesses ; LEFM ; Fatigue crack propagation analysis
• 刊名：Journal of Constructional Steel Research
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：129
• 期：Complete
• 页码：93-100
• 全文大小：1374 K
• 卷排序：129

文摘

Experimental S-N curve of 95% survival probability was established for butt welded splices in plates of different thicknesses. A center semi-circular surface crack with 0.075mm initial depth was recommended for the fatigue crack propagation analysis. It was found that the numerical approach would provide a lower SIF level than that obtained through the analytical approach. The calculation formula for the fatigue crack propagation life in terms of arbitrary initial crack between 0.075mm and 0.4mm was derived.