Investigation of acoustic emission due to deformation of titanium alloy and some results of acoustic-emission diagnostics of its predestruction states

被引：0
|
作者：
S. I. Builo
S. A. Bezhenov
机构：
[1] Research Institute of Mechanics and Applied Mathematics at Rostov State University,
[2] Russia Zaporozhye State Technical University,undefined
来源：
Russian Journal of Nondestructive Testing | 2000年 / 36卷
关键词：
Titanium Alloy; Acoustic Emission; Nondestructive Test; Stress Concentrator; Broad Frequency Band;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The paper presents acoustic-emission (AE) characteristics of the Ti-Al-Mo-Si alloy. The energy of one AE event has been estimated over the entire frequency band under investigation. AnS-shaped curve of the logarithm of the frequency of AE events plotted against the strain has been obtained, and the physical interpretation of such a dependence has been given. A tentative explanation of the delay of AE events on the initial stage of the material deformation with a stress concentrator has been suggested. On the base of the correlation between the service-life expectancy and the frequency of AE events, which has been established in our experiments, the degree of confidence in the diagnostic data concerning the predestruction state of gas-turbine blades in turbojet aircraft engines has been estimated.
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页码：307 / 314
页数：7
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