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Directivity Analysis for Optimal Design of Ultrasonic Angle Beam Transducer
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초음파 사각 트랜스듀서의 최적설계를 위한 지향성 해석

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Type
Academic journal
Author
Journal
The Korean Society of Mechanical Engineers Transactions of the Korean Society of Mechanical Engineers - A Vol.32 No.9 (WN.276) KCI Accredited Journals SCOPUS
Published
2008.9
Pages
796 - 803 (8page)

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Directivity Analysis for Optimal Design of Ultrasonic Angle Beam Transducer
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Abstract· Keywords

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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 ㎒ and 4 ㎒ 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.
#사각 트랜스듀서(Angle Beam Transducer) #가시화법(Visualization Method) #지향성(Directivity) #설계(Design)

Contents

Abstract
1. 서론
2. 초음파 사각 트랜스듀서 구조
3. 고체 내 초음파의 가시화
4. 지향성 해석법
5. 지향성 이론계산
6. 실험방법
7. 실험결과 및 고찰
8. 결론
참고문헌

References (10)

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1. [단행본] - J and H KrautKramer / 1990 / Ultrasonic Testing of materials / Springer-Verlag : 160 ~ 221 google schola 2. [단행본] - Albert S. Birks / 1991 / Ultrasonic Testing / American Society for Nondestructive Testing : 267 ~ 309 google schola 3. [학술지(정기간행물)] - Hall, K. G. / 1977 / A Qualitative Evaluation of Variable-angle Ultrasonic Transducers by the Photoelastic Visualization Method / Ultrasonics 15 : 245 ~ 252 google schola 4. [학술지(정기간행물)] - Light, G. M. / 1982 / Ultrasonic Transducer Characterization using the Combined Schlieren, Photoelastic, and Raman Nath System / Materials Evaluation 40 : 783 ~ 790 google schola 5. [학술지(정기간행물)] - Erhard, A. / 1985 / Characterization of Sound Field Parameters of Ultrasonic Probes using a Computer Acquisition System / NDT ＆ E International 18 : 359 ~ 362 google schola

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