The great error could be produced in measuring the residual stress in a weld with the use of calibration coefficient for the base metal instead of the weld metal.
目前通过应变增量计算残余应力的方法仍然是通过事先试验标定，测量超强或低强匹配焊缝中的残余应力时采用的仍然是母材的标定系数，因而会带来严重误差。
The great error could be produced in measuring the residual stress in a weld with the use of calibration coefficient for the base metal instead of the weld metal.
目前通过应变增量计算残余应力的方法仍然是通过事先试验标定，测量超强或低强匹配焊缝中的残余应力时采用的仍然是母材的标定系数，因而会带来严重误差。
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