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http://www.dbpia.co.kr/Journal/ArticleDetail/3206729


한국비파괴검사학회 > 비파괴검사학회지 > 비파괴검사학회지 제33권 제3호


비파괴검사학회지 제33권 제3호, 2013.6, 264-269 (6 pages)

Feasibility of MFC (Macro-Fiber Composite) Transducers for Guided Wave Technique

Gang Ren, Dongseok Yun, Hogeon Seo, Minkyoo Song, Kyung-Young Jhang식별저자
영어 초록
  Since MFC(macro-fiber composite) transducer has been developed, many researchers have tried to apply this transducer on SHM(structural health monitoring), because it is so flexible and durable that it can be easily embedded to various kinds of structures. The objective of this paper is to figure out the benefits and feasibility of applying MFC transducers to guided wave technique. For this, we have experimentally tested the performance of MFC patches as transmitter and sensors for excitation and reception of guided waves on the thin aluminum alloy plate. In order to enhance the signal accuracy, we applied the FIR filter for noise reduction as well as used STFT(short-time Fourier transform) algorithm to image the guided wave characteristics clearly. From the results, the guided wave generated based on MFC showed good agreement with its theoretical dispersion curves. Moreover, the ultrasonic Lamb wave techniques based on MFC patches in pitch-catch manner was tested for detection of surface notch defects of which depths are 10%, 20%, 30% and 40% of the aluminum plate thickness. Results showed that the notch was detectable well when the notch depth was 10% of the thickness or greater.
목차
Abstract
1. Introduction
2. Micro-Fiber Composite (MFC) Transducer
3. Experiments
4. Results and Analysis
5. Conclusions
References
키워드
상세서지
  • 발행기관 : 한국비파괴검사학회
  • 자료유형 : 전자저널 논문
  • 등재정보 : KCI 등재
  • 작성언어 : 영어
  • 파일형식 : Text PDF
  • KORMARC 보기
  • URL : http://www.dbpia.co.kr/Article/3206729 복사 즐겨찾기로 추가

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