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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on Performance Prediction for a Magnetostrictive Ultrasonic Transducer According to Arrangement of Permanent Magnets for Biasing

바이어스 자기장용 영구자석 배치에 따른 자왜 초음파 변환기 성능 예측에 관한 연구

  • 이호철 (대구가톨릭대학교 기계자동차공학부)
  • Received : 2010.09.20
  • Accepted : 2010.11.29
  • Published : 2010.12.20
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Abstract

The main subject of this paper is to develop analytic method with which output power or sensitivity variations of a magnetostrictive ultrasonic transducer can be estimated with no aid of experiments. After the bias magnetic field deployed over the patch is calculated using finite element analysis for magnetostatics, the representative value is extracted by averaging these field values. The operating point on the characteristic curve for magnetostriction is identified by this value and then the output performance is calculated from it. It is verified that the results from this simple model match well with those of its experimental version and some limits of this modeling technique are also considered.

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References

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