The stressintensity factors K1 of various position of welded joint were measured by single edge precracked tensile specimen.
用单边预裂纹拉伸试样测定了焊接接头各部位的应力强度因子K1值。
2
Then, the criteria of hydraulic fracturing of different tensile cracks are discussed. The mechanism and formula for stressintensity factor are put forward.