The improved "marks with load shedding" method was employed to test the fatigue of components with welding defects and to have its clear pattern of fatigue crack growth obtained, including welding defect influence rules.%对降载勾线法作了适当的改进后用于含焊接缺陷构件的疲劳试验,获得了清晰的含焊接缺陷构件断口疲劳裂纹扩展图,在此基础上探讨了焊接缺陷对构件疲劳强度的影响规律.
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