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
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.28 No.5
- 발행연도
- 2021.11
- 수록면
- 689 - 698 (10page)
이용수
초록· 키워드
오류제보하기
In Lamb wave based structural health monitoring (SHM) systems, damage scatter signals are usually used for damage identification. Such scatters are obtained by subtracting the current signal from a baseline. However, changes in the environmental condition, particularly temperature, make false scatters in the damage scatter signal. This affects the overall efficiently of the system. To overcome this obstacle, this study proposes a baseline-free damage identification technique. A dual-PZT actuation scheme is applied to generate a comparatively pure A0 mode. A wave velocity determination procedure is then developed to actively determine the velocity of the generated A0 mode in the presence of unmeasured temperature changes. Using a damage scatter separation process, the damage scatter wave is separated from other waves appear in the current signal. Finally, a damage diagnostic image is constructed to illustrate the most probable location of damage. The experimental validation of the developed technique is conducted on two aluminum plates one carrying an L shape crack and the other carrying a hole, subjected to temperatures changes. The experimental results demonstrate the effectiveness of the developed technique for damage identification in the presence of unmeasured temperature. During the proposed procedure no baseline data is used. This bright advantage, qualify the presented technique for practical SHM systems.
목차
등록된 정보가 없습니다.
참고문헌 (34)
참고문헌 신청
Behrouz Alem / 2016 / Reference-Free Damage Identification in Plate-Like Structures Using Lamb-Wave Propagation with Embedded Piezoelectric Sensors / Journal of Aerospace Engineering 29(6):04016062
K. Supreet Alguri / 2018 / Baseline-free guided wave damage detection with surrogate data and dictionary learning / The Journal of the Acoustical Society of America 143(6):3807~3818
C R Bijudas / 2013 / Time reversed Lamb wave for damage detection in a stiffened aluminum plate / Smart Materials and Structures 22(10):105026
Dongyue Gao / 2018 / Integrated impedance and Lamb wave–based structural health monitoring strategy for long-term cycle-loaded composite structure / Structural Health Monitoring 17(4):763~776
Victor Giurgiutiu / 2005 / Tuned Lamb Wave Excitation and Detection with Piezoelectric Wafer Active Sensors for Structural Health Monitoring / Journal of Intelligent Material Systems and Structures 16(4):291~305
K. Supreet Alguri / 2018 / Baseline-free guided wave damage detection with surrogate data and dictionary learning / The Journal of the Acoustical Society of America 143(6):3807~3818
C R Bijudas / 2013 / Time reversed Lamb wave for damage detection in a stiffened aluminum plate / Smart Materials and Structures 22(10):105026
Dongyue Gao / 2018 / Integrated impedance and Lamb wave–based structural health monitoring strategy for long-term cycle-loaded composite structure / Structural Health Monitoring 17(4):763~776
Victor Giurgiutiu / 2005 / Tuned Lamb Wave Excitation and Detection with Piezoelectric Wafer Active Sensors for Structural Health Monitoring / Journal of Intelligent Material Systems and Structures 16(4):291~305
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