OPMT 초음파 트랜스듀서를 이용한 평판구조 이상진단

Nondestructive Evaluation of plate structures using the Ultrasonic Transducer OPMT

  • 김윤영 (서울대학교 기계항공공학부) ;
  • 조승현 (서울대학교 기계항공공학부 대학원) ;
  • 이주승 (서울대학교 기계항공공학부 대학원) ;
  • 선경호 (서울대학교 기계항공공학부 대학원)
  • 발행 : 2004.11.01

초록

In this work, we propose a new ultrasonic damage inspection method in plate structures. The proposed method employs an OPMT (Orientation-adjustable Patch-type Magnetostrictive Transducer) in order to make the ultrasonic waves focused on the specific target point. For experiments, virtual grid points were set up at every 50 mm in an aluminum plate and two OPMTs were used for inspection. If there exists a crack in a plate, the reflected Lamb wave from the crack is measured in addition to the direct waves from the transmitting transducer to the receiving transducer.

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