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

  • Acoustic Methods
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Abstract

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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Authors and Affiliations

  1. Research Institute of Mechanics and Applied Mathematics at Rostov State University, Rostov-on-Don, Ukraine

    S. I. Builo

  2. Russia Zaporozhye State Technical University, Zaporozhye, Ukraine

    S. A. Bezhenov

Authors
  1. S. I. Builo
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  2. S. A. Bezhenov
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Builo, S.I., Bezhenov, S.A. Investigation of acoustic emission due to deformation of titanium alloy and some results of acoustic-emission diagnostics of its predestruction states. Russ J Nondestruct Test 36, 307–314 (2000). https://doi.org/10.1007/BF02759413

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  • DOI: https://doi.org/10.1007/BF02759413

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