Journal of the Korean Society for Nondestructive Testing (비파괴검사학회지)

The Korean Society for Nondestructive Testing (한국비파괴검사학회)
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Angle Beam Ultrasonic Testing Models and Their Application to Identification and Sizing of Surface Breaking Vertical Cracks

  • Song, Sung-Jin (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Hak-Joon (Center for Nondestructive Evaluation, Iowa State University) ;
  • Jung, Hee-Jun (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Young-H. (School of Mechanical Engineering, Sungkyunkwan University)
  • Published : 2002.12.30
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Abstract

Identification and sizing of surface breaking vertical cracks using angle beam ultrasonic testing in practical situation quite often become very difficult tasks due to the presence of non-relevant signals caused by geometric reflectors. The present work introduces effective and systematic approaches to take care of such a difficulty by use oi angle beam ultrasonic testing models that can predict the expected signals from various targets very accurately. Specifically, the model-based TIFD (Technique for Identification of Flaw signals using Deconvolution) is Proposed for the identification of the crack tip signals from the non-relevant geometric reflection signals. In addition, the model-based Size-Amplitude Curve is introduced for the reliable sizing of surface breaking vertical cracks.

Keywords

References

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