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以某型飞机5A02铝合金焊接模拟件的原始焊接接头和一次补焊接头为研究对象,通过拉伸试验、疲劳试验,研究了补焊对铝合金焊接接头力学性能的影响。结果表明:补焊对接头拉伸性能没有明显的影响,但是会明显降低焊接接头的中值疲劳强度。
Taking the original welded joint and the primary welded joint of 5A02 aluminum alloy welding simulation part of a certain aircraft as the research object, the tensile test and fatigue test were conducted to study the effect of the repaired welding on the mechanical properties of the aluminum alloy welded joint. The results show that the repaired welding has no obvious effect on the tensile properties of the joint, but it will obviously reduce the median fatigue strength of the welded joint.