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 利用該技術(shù),以近飽和磁化產(chǎn)生的巴克豪森效應(yīng)與應(yīng)力的關(guān)系,測(cè)量了鐵磁構(gòu)件的二軸應(yīng)力和焊接構(gòu)件的殘余應(yīng)力。