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.
引用
收藏
页码：307 / 314
页数：7
相关论文
共 7 条
  • [1] Bezhenov A.I.(1999)Acoustic-Emission Study of Effect of Surface Processing on Cyclic Strength Characteristics of Samples from a Nickel Alloy Problemy Prochnosti 3 139-145
  • [2] Bezhenov S.A.(1995)Utilization of Models of Statistical Radiophysics in Improving Degree of Confidence in Results of Acoustic-Emission Testing and Diagnostics of States on the Destruction Threshold Defektoskopiya 7 14-26
  • [3] Builo S.I.(1989)Distortion of AE Signal Parameters and Some Features of Reconstruction of Statistical Characteristics of Emission Sources Tekhn. Diagnostika i Nerazrushayushchii Kontrol' 1 15-23
  • [4] Builo S.I.(1997)Determination of Parameters of Damage Accumulation Process and Estimation of Destruction Criteria Based on Reconstructed Flow Intensity of Acoustic Emission Pulses Defektoskopiya 7 84-89
  • [5] Builo S.I.(1996)Probabilistic and Informational Aspects of Estimates of Degree of Confidence in Results of Nondestructive Testing and Diagnostics of Solids Defektoskopiya 5 20-25
  • [6] Builo S.I.(1996)Physical, Mechanical, and Informational Aspects of Estimates of Degree of Confidence in Results of Nondestructive Testing and Acoustic-Emission Diagnostics of States on Destruction Threshold in Materials Tekhn. Diagnostika i Nerazrushayushchii Kontrol' 1 40-44
  • [7] Builo S.I.(undefined)undefined undefined undefined undefined-undefined
1