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지원사업
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.15 No.4
- 발행연도
- 2015.1
- 수록면
- 1,121 - 1,137 (17page)
이용수
초록· 키워드
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This study presents probabilistic-based damage identification technique for highlightingdamage in metallic structures. This technique utilizes distributed piezoelectric transducers to generate andmonitor the ultrasonic Lamb wave with narrowband frequency. Diagnostic signals were used to define thescatter signals of different paths. The energy of scatter signals till different times were calculated by takingroot mean square of the scatter signals. For each pair of parallel paths an error function based on the energyof scatter signals is introduced. The resultant error function then is used to estimate the probability of thepresence of damage in the monitoring area. The presented method with an autofocusing feature is applied toaluminum plates for method verification. The results identified using both simulation and experimentalLamb wave signals at different central frequencies agreed well with the actual situations, demonstrating thepotential of the presented algorithm for identification of damage in metallic structures. An obvious merit ofthe presented technique is that in addition to damages located inside the region between transducers; thosewho are outside this region can also be monitored without any interpretation of signals. This noveltyqualifies this method for online structural health monitoring.
목차
등록된 정보가 없습니다.
참고문헌 (20)
참고문헌 신청
Coverley, P.T. / 2003 / Impact damage location in composite structures using optimized sensor triangulation procedure / Smart Mater. Struct 12(5):795~803
Hu, N. / 2008 / Damage identification of metallic structures using A0 mode of lamb waves / Struct. Health Monit 7(3):271~285
Ihn, J.B. / 2004 / Detection and monitoring of hidden fatigue crack growth using a built-in piezoelectric sensor/actuator network : I. Diagnostics / Smart Mater. Struct 13(3):609~620
Ihn, J.B. / 2008 / Pitch-catch active sensing methods in structural health monitoring for aircraft structures / Struct. Health Monit 7(1):5~19
Kundu, T. / 2009 / Health monitoring of a thermal protection system using lamb waves / Struct. Health Monit 8(1):29~45
Hu, N. / 2008 / Damage identification of metallic structures using A0 mode of lamb waves / Struct. Health Monit 7(3):271~285
Ihn, J.B. / 2004 / Detection and monitoring of hidden fatigue crack growth using a built-in piezoelectric sensor/actuator network : I. Diagnostics / Smart Mater. Struct 13(3):609~620
Ihn, J.B. / 2008 / Pitch-catch active sensing methods in structural health monitoring for aircraft structures / Struct. Health Monit 7(1):5~19
Kundu, T. / 2009 / Health monitoring of a thermal protection system using lamb waves / Struct. Health Monit 8(1):29~45
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