论文标题
应用局部方法的应用评估在低于零的温度下为焊接接头获得的疲劳测试结果
Application of Local Approaches to the Assessment of Fatigue Test results obtained for Welded Joints at Sub-Zero Temperatures
论文作者
论文摘要
几项研究发现，在零下温度下，结构钢的焊接接头的疲劳强度显着提高。这项研究通过研究局部疲劳评估方法的适用性来解决这项研究，该方法适用于暴露于零低温的焊接接头。为此，使用各种结构性热点和Notch应力方法在一系列温度下评估了两个圆角焊缝细节的疲劳测试结果，然后将其与标称应力方法进行比较。对于分析的评估方法和两个故障位置，发现预测精度的较大差异。
Several studies have found significant increase in the fatigue strength of welded joints of structural steels at sub-zero temperatures. This study addresses the research by investigating the applicability of local fatigue assessment methods to welded joints exposed to sub-zero temperatures. For this purpose, fatigue test results of two fillet weld details with weld toe and weld root failure are evaluated at a range of temperatures using a variety of structural hot-spot and notch stress approaches, then are compared to the nominal stress approach. Large differences in prediction accuracy are found for the analysed assessment methods and both failure locations.
