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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.6
- 수록면
- 18 - 24 (7page)
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In this study, the reflection of the L(0,2), axially symmetric guided elastic wave from defects in pipes above ground is examined using finite element method. Phase and group velocity dispersion curves for the pipe were presented for the selection of the excitation mode. Some simple signal processing was applied to determine the amplitude of each of the reflected waves and to calculate the reflection coefficient. The results show the reflection coefficient of this mode is very close to a linear function of the circumferential extent of the defect. The motivation for the work was the development of a technique for inspecting chemical plant pipelines, but the study addresses the nature of the reflection function and its general applicability.
목차
Abstract
1. 서론
2. 분산선도 및 유한요소 모델
3. 해석결과 및 반사계수
4. 결론
후기
참고 문헌
참고문헌 (14)
참고문헌 신청
1. [학술지(정기간행물)] - D. N. Allene / 1996 / The Effect of Discontinuities on the Long Range Propagation of Lamb Waves in Pipes / Proc.I.Mech.E.,part E 210 : 217 ~ 226
2. [학술지(정기간행물)] - C. Aristegui / 1999 / Guided Waves in Fluid-Filled Pipes Surrounded by Different Fluids / Review of the Progress in Quantitative NDE 18A : 159 ~ 166
3. [학술대회논문] - J. L. Rose / 1998 / Using Ultrasonic Guided Wave Mode Cutoff for Corrosion Detection and Classification / IEEE Ultrasonic Symposium : 851 ~ 854
4. [학술지(정기간행물)] - A. Velichko / 2008 / Post- Processing of the Full Matrix of Ultrasonic Transmit-Receive Array Data for Guided Wave Pipe inspection / Review of the Progress in Quantitative NDE 28A : 137 ~ 144
5. [학술지(정기간행물)] - Z. You / 1991 / Numerical Simulation of Ultrasonic Wave Propagation in Anisotropic and Attenuative Solid Materials / IEEE Trans.Ultrasonic,Ferroelectric and Frequency Control 38 : 436 ~ 445
2. [학술지(정기간행물)] - C. Aristegui / 1999 / Guided Waves in Fluid-Filled Pipes Surrounded by Different Fluids / Review of the Progress in Quantitative NDE 18A : 159 ~ 166
3. [학술대회논문] - J. L. Rose / 1998 / Using Ultrasonic Guided Wave Mode Cutoff for Corrosion Detection and Classification / IEEE Ultrasonic Symposium : 851 ~ 854
4. [학술지(정기간행물)] - A. Velichko / 2008 / Post- Processing of the Full Matrix of Ultrasonic Transmit-Receive Array Data for Guided Wave Pipe inspection / Review of the Progress in Quantitative NDE 28A : 137 ~ 144
5. [학술지(정기간행물)] - Z. You / 1991 / Numerical Simulation of Ultrasonic Wave Propagation in Anisotropic and Attenuative Solid Materials / IEEE Trans.Ultrasonic,Ferroelectric and Frequency Control 38 : 436 ~ 445
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UCI(KEPA) : I410-ECN-0101-2013-550-000492404