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本文采用电阻应变法,监测了点焊试件的疲劳裂纹萌生、扩展、破坏全过程。试验表明此方法对监测焊点的内裂纹是行之有效的。
In this paper, the resistance strain method was used to monitor the fatigue crack initiation, propagation and destruction of spot welding specimens. Experiments show that this method is effective in monitoring internal cracks in solder joints.