盲孔法测量残余应力试验中塑性修正的插值方法  

Interpolation Method in Plastic Correction in Blind Hole Method for Residual Stress Measurement

作　　者：吕国坤[1] 陈黎卿[1] 陈永新[1] 张念生[1] 

机构地区：[1]安徽农业大学工学院,安徽合肥230036

出　　处：《热加工工艺》2014年第9期185-187,190,共4页Hot Working Technology

基　　金：安徽省自然基金项目(1308085QE94);安徽省高校自然科学研究重点项目(KJ2013A125)

摘　　要：使用盲孔法测量高残余应力时会引入塑性变形的影响。对塑性变形的影响进行修正的根本方法是对应变释放系数的修正。文中对有高残余应力的部件使用盲孔法测量残余应力,并用基于应变释放系数的新方法———插值方法进行修正。通过与A、B系数高残余应力状态修正对比发现:插值法对高残余应力的测量修正效果良好,相对误差较低,对实际测量有理论指导作用。Using blind hole method measuring high residual stress can induce the effect of plastic deformation. To correction it＇s fundamental method is to modify the strain relief parameters. Using the blind hole method measures high residual stress components with a new method to modified result-interpolation method based on the strain relief parameters. The correction mothod for A, B coefficient and high residual stress state was compared. The interpolation method correction is better, the relative error is lower, there is a theoretical guidance for actual measurement.

关 键 词：盲孔法 残余应力 塑性修正 插值方法 

分 类 号：TG457.11[金属学及工艺—焊接]