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.20 No.6
- 발행연도
- 2017.1
- 수록면
- 669 - 682 (14page)
이용수
초록· 키워드
오류제보하기
The normalised version of bispectrum, the so-called bicoherence, has often proved a reliable method of damage detection on engineering applications. Indeed, higher-order spectral analysis (HOSA) has the advantage of being able to detect non-linearity in the structural dynamic response while being insensitive to ambient vibrations. Skewness in the response may be easily spotted and related to damage conditions, as the majority of common faults and cracks shows bilinear effects. The present study tries to extend the application of HOSA to damage localisation, resorting to a neural network based classification algorithm. In order to validate the approach, a non-linear finite element model of a 4-meters-long cantilever beam has been built. This model could be seen as a first generic concept of more complex structural systems, such as aircraft wings, wind turbine blades, etc. The main aim of the study is to train a Neural Network (NN) able to classify different damage locations, when fed with bispectra. These are computed using the dynamic response of the FE nonlinear model to random noise excitation.
목차
등록된 정보가 없습니다.
참고문헌 (27)
참고문헌 신청
Oreste S. Bursi / 2015 / Global Sensitivity-Based Model Updating for Heritage Structures / Computer-Aided Civil and Infrastructure Engineering 30(8):620~635
A.P. Bovsunovsky / 2005 / Considerations regarding superharmonic vibrations of a cracked beam and the variation in damping caused by the presence of the crack / Journal of Sound and Vibration 288(4-5):865~886
A. P. Bovsunovskii / 2006 / The effect of damping and force application point on the non-linear dynamic behavior of a cracked beam at sub-and superresonance vibrations / Strength of Materials 38(5):492~497
Brillinger, D.R. / 1967 / Asymptotic theory of estimates of kth-order spectra / Proceedings of the National Academy of Sciences of the United States of America 57(2):206~210
K. Chandrashekhara / 1993 / Linear and geometrically non-linear analysis of composite beams under transverse loading / Composites Science and Technology 47(4):339~347
A.P. Bovsunovsky / 2005 / Considerations regarding superharmonic vibrations of a cracked beam and the variation in damping caused by the presence of the crack / Journal of Sound and Vibration 288(4-5):865~886
A. P. Bovsunovskii / 2006 / The effect of damping and force application point on the non-linear dynamic behavior of a cracked beam at sub-and superresonance vibrations / Strength of Materials 38(5):492~497
Brillinger, D.R. / 1967 / Asymptotic theory of estimates of kth-order spectra / Proceedings of the National Academy of Sciences of the United States of America 57(2):206~210
K. Chandrashekhara / 1993 / Linear and geometrically non-linear analysis of composite beams under transverse loading / Composites Science and Technology 47(4):339~347
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