대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제32권9호
  • /
  • Pages.796-803
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  • 2008
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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초음파 사각 트랜스듀서의 최적설계를 위한 지향성 해석

Directivity Analysis for Optimal Design of Ultrasonic Angle Beam Transducer

  • 발행 : 2008.09.01
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초록

Ultrasonic testing uses the directivity of the ultrasonic wave, which propagates in on direction. The directivity is expressed as the relationship between the propagate direction and its sound pressure. The directivity of an ultrasonic wave is related to the choice of probe arrangement, testing sensitivity and scanning pitch and correct measurement of defect size and location. This paper describes on the directivity measurement of ultrasonic wave using the visualization method. The directivity of shear wave emitted from the angle beam transducer were constant during propagation. The difference of directivity was existed between 2 MHz and 4 MHz angle beam transducers. When these experimental results were compared with the theory which was based on the continuous wave, it showed good agreement with theoretical directivity on the principal lobe.

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참고문헌

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