Nondestructive detection of delamination and debonding of CFRP by a laser-based ultrasonic visualization method

J. Takatsubo, Shigeki Yashiro, H. Tsuda, N. Toyama, J. R. Lee, T. Ogisu

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 被引用数 (Scopus)

抄録

We have developed a generation pulsed-laser scanning method for visualizing the propagation of ultrasonic waves. While scanning a target object with a pulsed-laser beam to generate thermal-exited ultrasonic waves, we detected the propagated waves with a fixed PZT transducer. Although the detected waves were generated from different irradiation points, we were able to produce moving images of the ultrasound generated at the reception-transducer position by reconstructing the measured waveform data. This method has the following features that make it superior to the conventional visualization methods such as photo-elasticity method, reception probe scanning method and computer simulation. (1) it enables us to visualize ultrasonic waves propagating on a complex-shaped object with curved surfaces, steps, and dents. (2) it provides excellent working efficiency by eliminating the need for adjustments to the laser incidence angle and the focal distance. For these reasons, we believe that this new method can be effectively applied to the inspection of defects in the field. In this study, we examined the applicability of this method to CFRP materials, and the results demonstrate the validity of this method for nondestructive flaw inspection in CFRP-structures.

本文言語英語
ホスト出版物のタイトルNondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2007
DOI
出版ステータス出版済み - 11 5 2007
外部発表はい
イベントNondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2007 - San Diego, CA, 米国
継続期間: 3 20 20073 22 2007

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
6531
ISSN(印刷版)0277-786X

その他

その他Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2007
Country米国
CitySan Diego, CA
Period3/20/073/22/07

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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