Diagnostics of the prefracture state of materials according to the parameters of the amplitude distribution of accompanying acoustic-emission signals

被引：0
作者：
S. I. Builo
机构：
[1] Southern Federal University,Vorovich Institute of Mechanics and Applied Mathematics
来源：
Russian Journal of Nondestructive Testing | 2012年 / 48卷
关键词：
acoustic emission; amplitude distribution; diagnostics; nondestructive testing; prefracture state; Poisson process;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The results of an experimental and theoretical study of the form of the distribution-density function for acoustic-emission (AE) signal amplitudes at different material-destruction stages are described. On the basis of the Poisson model of the flaw-generation process, the theoretical form of the density of the acoustic-emission amplitude distribution during destruction of a solid is obtained. The conditions for the appearance and location of false amplitude maxima, which strongly reduce the reliability of the results from diagnostics of the prefracture state, are evaluated on the basis of the AE-amplitude distribution profile.
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页码：638 / 648
页数：10
相关论文
共 7 条
  • [1] Builo S.I.(1979)Information Content in the Amplitude Distribution of Acoustic-Emission Signals Soviet J. Nondest. Test. 15 1029-1031
  • [2] Tripalin A.S.(1995)Application of Statistical Radiophysics Models to Improve the Reliability of the Results of Acoustic Emission Testing and Diagnostics of the Prefracture State Rus. J. Nondest. Test. 31 492-503
  • [3] Builo S.I.(1996)Statistical Models for Qualitative Evaluation of the Distortion of the Amplitude Distributions of Acoustic Emission Pulses and for Increasing the Reliability of the Acoustic Emission Method Rus. J. Nondest. Test. 32 353-360
  • [4] Builo S.I.(2008)A Method for Identification of Deformation and Fracturing Stages by the Position of Singular Points of the Reconstructed Stream of AE Events Rus. J. Nondest. Test. 44 517-527
  • [5] Builo S.I.(2010)Acoustic-Emission Testing and Diagnostics of Kinetics of Physicochemical Processes in Liquid Media Rus. J. Nondest. Test. 46 684-689
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