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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.22 No.4
- 발행연도
- 2018.1
- 수록면
- 481 - 493 (13page)
이용수
초록· 키워드
오류제보하기
Ultrasonic guided waves have attracted increasing attention for non-destructive testing (NDT) and structural health monitoring (SHM) of bridge cables. They offer advantages like single measurement, wide coverage of acoustical field, and long-range propagation capability. To design defect detection systems, it is essential to understand how guided waves propagate in cables and how to select the optimal excitation frequency and mode. However, certain cable characteristics such as multiple wires, anchorage, and polyethylene (PE) sheath increase the complexity in analyzing the guided wave propagation. In this study, guided wave modes for multi-wire bridge cables are identified by using a semi-analytical finite element (SAFE) technique to obtain relevant dispersion curves. Numerical results indicated that the number of guided wave modes increases, the length of the flat region with a low frequency of L(0,1) mode becomes shorter, and the cutoff frequency for high order longitudinal wave modes becomes lower, as the number of steel wires in a cable increases. These findings were used in design of transducers for defect detection and selection of the optimal wave mode and frequency for subsequent experiments. A magnetostrictive transducer system was used to excite and detect the guided waves. The applicability of the proposed approach for detecting and locating wire breakages was demonstrated for a cable with 37 wires. The present ultrasonic guided wave method has been found to be very responsive to the number of broken wires and is thus capable of detecting defects with varying sizes.
목차
등록된 정보가 없습니다.
참고문헌 (27)
참고문헌 신청
Bartoli, I / 2006 / Modeling wave propagation in damped waveguides of arbitrary Cross-Section / J. Sound Vib 295(3):685~707
Kumari Beena / 2017 / Monitoring degradation in concrete filled steel tubular sections using guided waves / Smart Structures and Systems, An International Journal 19(4):371~382
조수진 / 2010 / Structural health monitoring of a cable-stayed bridge using wireless smart sensor technology: data analyses / Smart Structures and Systems, An International Journal 6(5):461~480
Ditri, J.J / 1992 / Excitation of guided elastic wave modes in hollow cylinders by applied surface tractions / J. Appl. Phys 72(7):2589~2597
Siavash Dorvash / 2014 / Statistics based localized damage detection using vibration response / Smart Structures and Systems, An International Journal 14(2):85~104
Kumari Beena / 2017 / Monitoring degradation in concrete filled steel tubular sections using guided waves / Smart Structures and Systems, An International Journal 19(4):371~382
조수진 / 2010 / Structural health monitoring of a cable-stayed bridge using wireless smart sensor technology: data analyses / Smart Structures and Systems, An International Journal 6(5):461~480
Ditri, J.J / 1992 / Excitation of guided elastic wave modes in hollow cylinders by applied surface tractions / J. Appl. Phys 72(7):2589~2597
Siavash Dorvash / 2014 / Statistics based localized damage detection using vibration response / Smart Structures and Systems, An International Journal 14(2):85~104
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