지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.4
- 수록면
- 110 - 117 (8page)
- DOI
- 10.7779/JKSNT.2021.41.2.110
이용수
초록· 키워드
오류제보하기
Structure health monitoring of beam structures is important in civil and mechanical engineering. Lamb waves have the advantages of long propagation distance and low power loss, which are widely used in the field of nondestructive testing. However, Lamb waves generated via conventional methods usually contain multiple modes, and in many cases, the multi-mode Lamb waves cause difficulties in damage detection and localization. This research proposes a novel single-A<SUB>0</SUB> mode Lamb wave generation technique; the actuator is attached on the side surface of a beam structure, and the sensor is attached on the top or bottom surface, which is perpendicular to the side surface, such that the single-A<SUB>0</SUB> mode of the Lamb wave can be generated. Due to the mode conversion effect of the Lamb wave when it passes through a crack, the existence of the crack can be determined by evaluating the existence of the S<SUB>0</SUB> mode. In addition, the crack can be localized accurately using the proposed algorithm. Numerical and experimental investigations are performed to verify the performance of the proposed method. Comparisons with other single-mode Lamb wave generation methods are also performed to validate the advantages of the proposed method.
목차
Abstract
1. Introduction
2. The proposed method
3. Finite element model approach
4. Experimental investigation
5. Comparison with other methods
6. Conclusion
References
참고문헌 (22)
참고문헌 신청
L. De Marchi / 2010 / Warped basis pursuit for damage detection using Lamb waves / IEEE transactions on ultrasonics, ferroelectrics, and frequency control 57(12):2734~2741
S. B. Kim / 2008 / Instantaneous crack detection using dual PZT transducers / Health Monitoring of Structural and Biological Systems 2008. International Society for Optics and Photonics 6935:693509
H. K. Jung / 2018 / Impact and damage localization with integrated active and passive sensing using L-shaped sensor arrays / Structural Health Monitoring 29:3436~3443
X. L. Liu / 2013 / Investigation on the design of piezoelectric actuator/sensor for damage detection in beam with lamb waves / Experimental Mechanics 53(3):485~492
C. F. Rao / 2019 / Bidirectional, bimodal ultrasonic lamb wave sensing in a composite plate using a polarization-maintaining fiber bragg grating / Sensors 19(6):1375
S. B. Kim / 2008 / Instantaneous crack detection using dual PZT transducers / Health Monitoring of Structural and Biological Systems 2008. International Society for Optics and Photonics 6935:693509
H. K. Jung / 2018 / Impact and damage localization with integrated active and passive sensing using L-shaped sensor arrays / Structural Health Monitoring 29:3436~3443
X. L. Liu / 2013 / Investigation on the design of piezoelectric actuator/sensor for damage detection in beam with lamb waves / Experimental Mechanics 53(3):485~492
C. F. Rao / 2019 / Bidirectional, bimodal ultrasonic lamb wave sensing in a composite plate using a polarization-maintaining fiber bragg grating / Sensors 19(6):1375
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