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An evaluation of the flaw-detection characteristics for the detection of fatigue cracks by the acoustic-emission method in samples made of steel 20 that have a cast structure

  • Acoustic Methods
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Abstract

The results of experimental studies on the behavior of fatigue damage in the course of cyclic and static tests using the acoustic-emission method are presented. When performing research works, samples with a stress concentrator that has a steel 20 cast structure were exposed to cyclic loading. The process of the fatigue crack propagation was recorded by two acoustic emission transducers. The composition of the wave packet of the acoustic-emission signal generated by the crack growth was determined and changes in its spectral characteristics were recorded. The samples with fatigue damage were subjected to static tests. The flaw-detection characteristics for the detection of a fatigue crack during static tests were given. A fractographic analysis of the fractures that established the connection with the acoustic-emission data was carried out.

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References

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Authors and Affiliations

  1. Bauman Moscow State Technical University, Moscow, Russia

    G. A. Bigus & A. A. Travkin

  2. Research and Education Center on Welding and Testing, Bauman Moscow State Technical University, Moscow, Russia

    A. A. Travkin

Authors
  1. G. A. Bigus
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  2. A. A. Travkin
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Correspondence to G. A. Bigus.

Additional information

Original Russian Text © G.A. Bigus, A.A. Travkin, 2015, published in Defektoskopiya, 2015, Vol. 51, No. 1, pp. 40–47.

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Bigus, G.A., Travkin, A.A. An evaluation of the flaw-detection characteristics for the detection of fatigue cracks by the acoustic-emission method in samples made of steel 20 that have a cast structure. Russ J Nondestruct Test 51, 32–38 (2015). https://doi.org/10.1134/S1061830915010027

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  • DOI: https://doi.org/10.1134/S1061830915010027

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