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 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.54 No.1
- 발행연도
- 2015.1
- 수록면
- 105 - 119 (15page)
이용수
초록· 키워드
오류제보하기
Structural damage detection using modal strain energy (MSE) is one of the most efficient and reliable structural health monitoring techniques. However, some of the existing MSE methods have been validated for special types of structures such as beams or steel truss bridges which demands improving the available methods. The purpose of this study is to improve an efficient modal strain energy method to detect and quantify the damage in complex structures at early stage of formation. In this paper, a modal strain energy method was mathematically developed and then numerically applied to a fixed-end beam and a three-story frame including single and multiple damage scenarios in absence and presence of up to five per cent noise. For each damage scenario, all mode shapes and natural frequencies of intact structures and the first five mode shapes of assumed damaged structures were obtained using STRAND7. The derived mode shapes of each intact and damaged structure at any damage scenario were then separately used in the improved formulation using MATLAB to detect the location and quantify the severity of damage as compared to those obtained from previous method. It was found that the improved method is more accurate, efficient and convergent than its predecessors. The outcomes of this study can be safely and inexpensively used for structural health monitoring to minimize the loss of lives and property by identifying the unforeseen structural damages.
목차
등록된 정보가 없습니다.
참고문헌 (22)
참고문헌 신청
B. Asgarian / 2009 / Damage detection in jacket type offshore platforms using modal strain energy / Structural Engineering and Mechanics, An Int＇l Journal 33(2):325~337
Brehm, M. / 2010 / An automatic mode pairing strategy using an enhanced modal assurance criterion based on modal strain energies / J. Sound. Vib 329:5375~5392
Chan, T.H.T. / 2011 / Structural Health Monitoring in Australia / Nova Science Publishers
Ding, Q. / 2013 / Damage detection in road and bridge based on modal strain energy method / ICTE © American Society of Civil Engineers :1753~1758
Hu, H. C. / 1987 / The Vibration Theory of Multiple Freedom System / Science Press
Brehm, M. / 2010 / An automatic mode pairing strategy using an enhanced modal assurance criterion based on modal strain energies / J. Sound. Vib 329:5375~5392
Chan, T.H.T. / 2011 / Structural Health Monitoring in Australia / Nova Science Publishers
Ding, Q. / 2013 / Damage detection in road and bridge based on modal strain energy method / ICTE © American Society of Civil Engineers :1753~1758
Hu, H. C. / 1987 / The Vibration Theory of Multiple Freedom System / Science Press
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