船用高强度钢焊接残余应力测量技术研究

本文研究采用纯弯曲梁法对高强度钢X射线弹性常数(XECs)进行了试验测定；研究分析了试件表面电解腐蚀前后以及不同的电解腐蚀深度对残余应力测量结果的影响,分析得到对钢结构表面预处理的操作方法。最后进行了高强度钢平板焊接试板残余应力测量验证试验,并与数据仿真结果进行了比较,试验结果表明：试板焊接残余应力分布与数值仿真结果基本一致；其中有2/3的比对测点的残余应力测量偏差小于±25MPa。

Study the Test Method for the Welding Residual Stress ofMarine High-tensile Steel

In this paper, the X-ray elasticity constants (XECs) of high-tensile steel was measured by experiment and an appropriate value was chose for the high-tensile steel. Then we studied the way to pre-treat the steel surface and analysed the effect of different corrosion depth or non-corrosion on the measurement results. Finally we measured the residual stress of weld test sample and compared with the results of numerical simulation. The residual stress distribution of the test sample is in accord with numerical simulation results. Specially the measurement deviation between two-thirds ratio of relative points is less then ±25MPa.