用声弹性法估计循环荷载下的应变-应力状态

IF 0.2 Q4 PHYSICS, MULTIDISCIPLINARY
Vladimir K. Belchenko, Aleksander M. Lobachev, Viktor S. Modestov, Dmitriy A. Tretyakov, Lev V. Shtukin
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引用次数: 12

摘要

本文研究了声弹性法在循环荷载下应变-应力状态估计中的适用性。研究发现,随着应力循环次数的增加,声波各向异性沿试样工作部分的均匀分布以及纵波和横波的速度基本上变得不均匀。此外,声学各向异性的绝对值最大的是塑性变形最大的点,特别是在样品色散区域。这种效应从试样加载的早期阶段一直记录到试样断裂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An estimation of the strain-stress state under cyclic loading by the acoustoelasticity method

The paper studies the applicability of the acoustoelasticity method to estimation of the strain-stress state under cyclic loading. It has been found that the uniform distributions of acoustic anisotropy along the working part of the sample and of the velocities of longitudinal and transverse ultrasonic waves become substantially non-uniform with an increase in the number of stress cycles. Moreover, the largest absolute values of acoustic anisotropy fell on the points with the largest plastic deformations, in particular, in the area of sample dispersion. The effect was being recorded from the early stages of sample loading until the fracture of the sample.

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