The results showed that most multiaxial fatigue cracks were initiated and propagated along the direction of maximum shear plane or on the direction perpendicular to the tubular specimen's axis.
研究表明，多轴疲劳裂纹主要是沿最大剪切平面或垂直于管形试样的轴线方向扩展。
The fatigue resistance of the butt welds can be improved by means of removing the weld reinforcement and designing the weld in the maximum shear stress plane.
去除焊缝余高或将焊缝设计在最大剪应力平面内可明显改善对焊接头的疲劳性能。
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