Abstract

We consider the problem of steady-state vibrations generated by a defect in an elastic material that is at the stage of prefracture under conditions of a plane stress state. The process of radiation of acoustic emission (AE) by a defect extending to the free boundary of the elastic body is investigated. The problem is to reconstruct the defect radiation amplitudes based on AE signals at the free boundary of the body. The inverse reconstruction problem is studied and solved on the basis of the variational approach. The data of numerical calculation of radiation parameters are presented for aluminum.

中文翻译：

---

平面应力状态下基于声发射信号的缺陷辐射幅度重构

摘要

我们考虑在平面应力状态下，处于预断裂阶段的弹性材料中的缺陷所产生的稳态振动问题。研究了缺陷延伸到弹性体自由边界的声发射（AE）辐射过程。问题是基于人体自由边界处的AE信号来重建缺陷辐射幅度。在变分法的基础上研究并解决了逆重构问题。给出了铝辐射参数数值计算的数据。