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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.18 No.3
- 발행연도
- 2016.1
- 수록면
- 471 - 484 (14page)
이용수
초록· 키워드
오류제보하기
Abstract Optical fiber sensors have been proven that they have the potential to detect high-frequency ultrasonic signals, in structural health monitoring field which generally refers to acoustic emission signals from active structural damages and guided waves excited by ultrasonic actuators and propagating in waveguide. In this work, the sensing properties of optical fiber sensors based on Mach-Zehnder interferometer were investigated in the metal plate. Analytical formulas were conducted first to explore the parameters affecting its sensing performances. Due to the simple and definable frequency component, the Lamb wave excited by the piezoelectric wafer was employed to study the sensitivity of the proposed optical fiber sensors with respect to the frequency, rather than the acoustic emission signals. In the experiments, according to above investigations, spiral shape optical fiber sensors with different size were selected to increase their sensitivity. Lamb waves were excited by a circular piezoelectric wafer, while another piezoelectric wafer was used to compare their voltage responses. Furthermore, by changing the excitation frequency, the tuning frequency characteristic of the proposed optical fiber sensor was also investigated experimentally.
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참고문헌 (22)
참고문헌 신청
Alcoz, J. J. / 1990 / Embedded fiber-optic fabry-perot ultrasound sensor / IEEE T. Ultrason. Ferr 37(4):302~306
Atherton, K. / 2000 / Mach-Zehnder optical fiber interferometers for the detection of ultrasound / Proceedings of SPIE 3986:27~34
Bucaro, J. A. / 1977 / Optical fiber acoustic sensor / Appl. Optics 16(7):1761~1762
Carpinteri, A. / 2007 / Structural damage diagnosis and life-time assessment by acoustic emission monitoring / Eng. Fract. Mech 74:273~289
Cawley, P. / 1996 / The use of Lamb waves for the long range inspection of large structures / Ultrasonics 34:287~290
Atherton, K. / 2000 / Mach-Zehnder optical fiber interferometers for the detection of ultrasound / Proceedings of SPIE 3986:27~34
Bucaro, J. A. / 1977 / Optical fiber acoustic sensor / Appl. Optics 16(7):1761~1762
Carpinteri, A. / 2007 / Structural damage diagnosis and life-time assessment by acoustic emission monitoring / Eng. Fract. Mech 74:273~289
Cawley, P. / 1996 / The use of Lamb waves for the long range inspection of large structures / Ultrasonics 34:287~290
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