Using Amplitude Analysis of Acoustic Emission Signals under Cyclic and Static Loading of Steel Samples

The results of amplitude analysis of discrete acoustic emission signals from developing sources such as fatigue cracks are presented. The studies were carried out on three groups of samples with stress raisers. The specimens were made of ordinary grade structural low-carbon steels, quality steels, a...

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Bibliographic Details
Published in:Russian journal of nondestructive testing 2021-09, Vol.57 (9), p.753-761
Main Authors: Stepanova, L. N., Kuten, M. M., Bobrov, A. L.
Format: Article
Language:English
Subjects:
Acoustic emission
Acoustic fatigue
Acoustic Methods
Acoustics
Amplitudes
Characterization and Evaluation of Materials
Chemistry and Materials Science
Correlation coefficients
Crack propagation
Cyclic loads
Emission analysis
Fatigue cracks
Fatigue failure
Low alloy steels
Low carbon steels
Materials Science
Quality
Structural Materials
Wave attenuation
Wave power
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Summary:The results of amplitude analysis of discrete acoustic emission signals from developing sources such as fatigue cracks are presented. The studies were carried out on three groups of samples with stress raisers. The specimens were made of ordinary grade structural low-carbon steels, quality steels, and low-alloy cast steels and were loaded with tensile static and combined loads, including static and cyclic loads. A power-law dependence has been established of the distribution density of the amplitude of signals with a high correlation coefficient for sources of acoustic emission, which varies little at different stages of crack growth, with the exception of the stage preceding the fracture. The studies have made it possible to use the amplitude distribution of signals to determine the number of acoustic emission signals from sources such as cracks located at different distances from the receivers and taking into account the attenuation of the wave energy.
ISSN:1061-8309
1608-3385
DOI:10.1134/S1061830921090096