Journal of the Korean Society for Nondestructive Testing (비파괴검사학회지)

The Korean Society for Nondestructive Testing (한국비파괴검사학회)
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Guided-Wave Tomographic Imaging of Plate Defects by Laser-Based Ultrasonic Techniques

  • Park, Junpil (Graduuate School, School of Mechanical Engineering, Pusan National University) ;
  • Lim, Juyoung (Graduuate School, School of Mechanical Engineering, Pusan National University) ;
  • Cho, Younho (School of Mechanical Engineering, Pusan National University)
  • Received : 2014.11.10
  • Accepted : 2014.12.24
  • Published : 2014.12.30
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Abstract

Contact-guided-wave tests are impractical for investigating specimens with limited accessibility and rough surfaces or complex geometric features. A non-contact setup with a laser-ultrasonic transmitter and receiver is quite attractive for guided-wave inspection. In the present work, we developed a non-contact guided-wave tomography technique using the laser-ultrasonic technique in a plate. A method for Lamb-wave generation and detection in an aluminum plate with a pulsed laser-ultrasonic transmitter and Michelson-interferometer receiver was developed. The defect shape and area in the images obtained using laser scanning, showed good agreement with the actual defect. The proposed approach can be used as a non-contact online inspection and monitoring technique.

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References

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Cited by

  1. Quantitative tomographic visualization for irregular shape defects by guided wave long range inspection vol.16, pp.9, 2015, https://doi.org/10.1007/s12541-015-0253-4