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Title: Evaluation of Thickness Reduction in a Thin Plate Using a Non-Contact Guided Wave Technique

Abstract

Ultrasonic guided waves are widely being studied and successfully applied to various non-destructive tests with the advantage of a long range inspection. Recently, non-contact methods are also adopted and combined with the guided wave techniques. In this paper, an advanced technique for the nondestructive detection of thinning defects simulating hidden corrosion in thin plates using non-contact guided waves is presented. The proposed approach uses EMAT(Electro-Magnetic Acoustic Transducer) for the non-contact generation and detection of guided plate waves in aluminum plates. Interesting features of the dispersive behavior in selected wave modes are used for the detection of plate thinning. The experimental results show that the mode cutoff measurements provide a qualitative measurement of thinning defects and change in the mode group velocity can be used as quantitative parameter of thinning depth measurement.

Authors:
 [1]; ;  [2];  [3];  [4];  [5]
  1. Research Institute of Industrial Science and Technology, 32 Hyoja-Dong, Nam-Ku, Pohang (Korea, Republic of)
  2. Dept. of Mechanical Engineering, Seoul National University of Technology, Seoul 139-743 (Korea, Republic of)
  3. Graduate School, Hanyang University, Seoul 133-791 (Korea, Republic of)
  4. Graduate School of Energy and Environment, Seoul National University of Technology, Seoul 139-743 (Korea, Republic of)
  5. Korea Electric Power Research Institute, Daejeon 305-380 (Korea, Republic of)
Publication Date:
OSTI Identifier:
20798237
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 820; Journal Issue: 1; Conference: Conference on review of progress in quantitative nondestructive evaluation, Brunswick, ME (United States), 31 Jul - 5 Aug 2005; Other Information: DOI: 10.1063/1.2184523; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM; ALUMINIUM ALLOYS; CORROSION; DEFECTS; PLATES; THICKNESS; TRANSDUCERS; ULTRASONIC TESTING

Citation Formats

Song, Won-Joon, Park, Ik-Keun, Kim, Tae-Hyung, Kim, Hyun-Mook, Kim, Yong-Kwon, and Cho, Yong-Sang. Evaluation of Thickness Reduction in a Thin Plate Using a Non-Contact Guided Wave Technique. United States: N. p., 2006. Web. doi:10.1063/1.2184523.
Song, Won-Joon, Park, Ik-Keun, Kim, Tae-Hyung, Kim, Hyun-Mook, Kim, Yong-Kwon, & Cho, Yong-Sang. Evaluation of Thickness Reduction in a Thin Plate Using a Non-Contact Guided Wave Technique. United States. doi:10.1063/1.2184523.
Song, Won-Joon, Park, Ik-Keun, Kim, Tae-Hyung, Kim, Hyun-Mook, Kim, Yong-Kwon, and Cho, Yong-Sang. Mon . "Evaluation of Thickness Reduction in a Thin Plate Using a Non-Contact Guided Wave Technique". United States. doi:10.1063/1.2184523.
@article{osti_20798237,
title = {Evaluation of Thickness Reduction in a Thin Plate Using a Non-Contact Guided Wave Technique},
author = {Song, Won-Joon and Park, Ik-Keun and Kim, Tae-Hyung and Kim, Hyun-Mook and Kim, Yong-Kwon and Cho, Yong-Sang},
abstractNote = {Ultrasonic guided waves are widely being studied and successfully applied to various non-destructive tests with the advantage of a long range inspection. Recently, non-contact methods are also adopted and combined with the guided wave techniques. In this paper, an advanced technique for the nondestructive detection of thinning defects simulating hidden corrosion in thin plates using non-contact guided waves is presented. The proposed approach uses EMAT(Electro-Magnetic Acoustic Transducer) for the non-contact generation and detection of guided plate waves in aluminum plates. Interesting features of the dispersive behavior in selected wave modes are used for the detection of plate thinning. The experimental results show that the mode cutoff measurements provide a qualitative measurement of thinning defects and change in the mode group velocity can be used as quantitative parameter of thinning depth measurement.},
doi = {10.1063/1.2184523},
journal = {AIP Conference Proceedings},
number = 1,
volume = 820,
place = {United States},
year = {Mon Mar 06 00:00:00 EST 2006},
month = {Mon Mar 06 00:00:00 EST 2006}
}