残余应力分析的超声波波速反问题方法

The Method for Analysis of Residual Stress by Using Ultrasonic Velocity Inverse Problem

In this paper, a new method for analysis of residual stress is presented based on acoustroelasticity theory and one-demensional inverse problem theory on sonic velocity. By using ultrasonic tesing instrument and inverse calculation of sonic velocity, the normal stress of residual stress at arbitrary depth is measured and the distribution rule of residual stress along the lines of thickness is described.