Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Non-contact Longitudinal Modal Testing of a Non-ferromagnetic Pipe Using Magnetostrictive Patches

자기 변형 패치를 이용한 비자성 배관의 비접촉 종진동 모달 테스팅

  • 박찬일 (서울대학교 정밀기계설계공동연구소) ;
  • 한순우 (한국철도기술연구원) ;
  • 김윤영 (서울대학교 공과대학 기계항공공학부)
  • Published : 2008.03.20
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Abstract

Non-contact modal testing for longitudinal modes of a pipe is discussed in this work. The suggested method can generate and measure longitudinal vibrations without mechanical contact by using the coupling phenomenon between deformation and magnetic field, known as the magnetostrictive effect. This effect has been used to generate and measure ultrasonic waves, but seldom used to deal with audible vibrations. In this investigation, the validity of the developed method in a typical vibration frequency range is checked with an Inconel pipe being used in nuclear power plants.

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References

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