Journal of the Korean Society for Precision Engineering (한국정밀공학회지)
- Volume 10 Issue 2
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- Pages.154-160
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- 1993
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
A Study on the Optimal Frequency for Precise Measurement of Fracture Velocity by Ultrasonic Fractography
초음파 Fractography에 의한 파괴속도의 첨밀측정을 위한 최적주파수 선정에 관한 연구
- Lee, B.S. ;
- Han, E.K. ;
- Song, C.S.
- 이범성 (한양대학교 대학원 정밀기계공학과) ;
- 한응교 (한양대학교 정밀기계공학과) ;
- 송창섭 (한양대학교 정밀기계공학과)
- Published : 1993.06.01
Abstract
A mothod to decide the optimal frequency for the fracture velocity measurement by ultrasonic fractography is presented. A theoretical formula to decide the optimal frequency for ultrasonic fractography testing is made and it is compared with experimental value. According to the formula the optimal frequency is shown to be depending on the attenuation coefficient and size(width) of the specimen. In the case of PMA specimen with ligament 43mm the theoretical value for the optimal frequency is about 260 KHz and it is good agreement with experimental value.