Abstract In the present paper, a fatigue analysis for welded joints made of mild, and high- and ultra-high-strength steel grades and post-weld-treated with grinding and combined grinding and peening methods is carried out using literature data. The 4R method was used to re-analyze the data points considering material strength, residual stress, applied stress ratio, and weld toe radius. The use of the 4R method, instead of local fatigue strength assessment approaches, enabled residual stresses to be taken into consideration and accurately predicted the fatigue strength of joints in the as-welded and post-weld-treated conditions, including grinding and combined grinding and peening methods.

中文翻译：

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地面角焊缝疲劳强度评估采用4R法

摘要 本文利用文献资料，对采用磨削、磨削和喷丸联合方法进行焊后处理的低碳钢、高强钢和超高强钢焊接接头进行疲劳分析。4R 方法用于重新分析数据点，考虑材料强度、残余应力、应用应力比和焊趾半径。使用 4R 方法代替局部疲劳强度评估方法，可以考虑残余应力，并准确预测焊后和焊后处理条件下接头的疲劳强度，包括磨削和联合磨削和喷丸方法。