Characteristic Analysis of AE Signal Caused by Crack Growth

  • J. G. Kim
  • D. S. Gu
  • H. J. Kim
  • B. K. Choi
Conference paper


Acoustic emission (AE) is a well established non-destructive test technique. In this paper fatigue crack growth tests were performed using SM53C to evaluate the AE signals caused by crack. AE system was used to detect the crack signals. Feature values were calculated based on the AE signal analysis to evaluate the crack growth in three steps. The steps are divided into initiation, growth and breakage; and were classified according to the velocity of the crack growth. Both time and frequency plots were created using the AE signals of each step. In the feature domains, it was found that AE values changed rapidly as the velocity of crack increases.


Acoustic Emission Acoustic Emission Signal Entropy Estimation Time Waveform Crest Factor 
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This research was supported by second-phase of BK21 (Brain Korea 21) Project, and thank you to concem.


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Copyright information

© Springer-Verlag London Limited 2012

Authors and Affiliations

  • J. G. Kim
    • 1
  • D. S. Gu
    • 1
  • H. J. Kim
    • 1
  • B. K. Choi
    • 2
  1. 1.Department of Precision Mechanical EngineeringGyeongsang National UniversityTongyeong cityRepublic of Korea
  2. 2.Department of Energy and Mechanical EngineeringInstitute of Marine Industry, Gyeongsang National UniversityTongyeong cityRepublic of Korea

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