【摘要】 本文介绍一种用于残余应力分析的超声波测量仪和有关的声弹性理论。声弹性方法是利用弹性波来获得关于材料内部应力分布的信息,与利用偏振光来进行应力分析的光弹性方法非常相似。与光弹性方法不同的是声弹性方法不需要透明模型,能直接测量材料的应力分布。文中还介绍了用超声波测量仪对热套圆盘预制的平面应力场进行的声弹性实验应力分析,表明实验结果与理论计算大多数较接近。更多还原

【Abstract】 In this paper, an ultrasonic testing instrument for residual stress analysis and relative acoustoelasticity theory are described. The acoustoelastic methods which utilize elastic wave to obtain information about stress distribution within a material are similar to photoelastic methods which use polarized ligeht for stress analysis. Different from photoelastic method, acoustoelastic method does not need transparent model and can measure stress distribution of material directly. The paper describes an acoustoelastic stress experiment of plane stress field within a heat-patching disk by ultrasonic testing instrument. Theoretical results are in good agreement with experiment results.更多还原