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.19 No.4
- 발행연도
- 2017.1
- 수록면
- 393 - 402 (10page)
이용수
초록· 키워드
오류제보하기
Many vibration-based global damage detection methods attempt to extract modal parameters from vibration signals as the main structural features to detect damage. The local flexibility method is one promising method that requires only the first few fundamental modes to detect not only the location but also the extent of damage. Generally, the mode shapes in the lateral degree of freedom are extracted from lateral vibration signals and then used to detect damage for a beam structure. In this study, a new approach which employs the mode shapes in the rotary degree of freedom obtained from the macro-strain vibration signals to detect damage of a beam structure is proposed. In order to facilitate the application of mode shapes in the rotary degree of freedom for beam structures, the local flexibility method is modified and utilized. The proposed rotary approach is verified by numerical and experimental studies of simply supported beams. The results illustrate potential feasibility of the proposed new idea. Compared to the method that uses lateral measurements, the proposed rotary approach seems more robust to noise in the numerical cases considered. The sensor configuration could also be more flexible and customized for a beam structure. Primarily, the proposed approach seems more sensitive to damage when the damage is close to the supports of simply supported beams.
목차
등록된 정보가 없습니다.
참고문헌 (17)
참고문헌 신청
Abdo, M. A. B. / 2002 / A numerical study of structural damage detection using changes in the rotation of mode shapes / J. Sound Vib 251(2):227~239
Ansari, F. / 2005 / Fiber optic health monitoring of civil structures using long gage and acoustic sensors / Smart Mater. Struct. 14(3):S1
Bernal, D. / 2002 / Load vectors for damage localization / J. Eng. Mech 128(1):7~14
Cardini, A. J. / 2009 / Long-term structural health monitoring of a multigirder steel composite bridge using strain data / Struct. Hlth. Monit 8(1):47~58
Fan, N. Y. / 1998 / Localized long gage fiber optic strain sensors / Smart Mater. Struct 7(2):257
Ansari, F. / 2005 / Fiber optic health monitoring of civil structures using long gage and acoustic sensors / Smart Mater. Struct. 14(3):S1
Bernal, D. / 2002 / Load vectors for damage localization / J. Eng. Mech 128(1):7~14
Cardini, A. J. / 2009 / Long-term structural health monitoring of a multigirder steel composite bridge using strain data / Struct. Hlth. Monit 8(1):47~58
Fan, N. Y. / 1998 / Localized long gage fiber optic strain sensors / Smart Mater. Struct 7(2):257
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