Biaxial stress of ferromagnetic materials and residual stress of welding components have been measured by using the relation between barkhausen effeet based on the law of approach to saturation magnetization and internal stress 利用该技术，以近饱和磁化产生的巴克豪森效应与应力的关系，测量了铁磁构件的二轴应力和焊接构件的残余应力。
