a new transmissibility based indicator of local variation in structure and its application for damage detection
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2015
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Abstract
The presence of damage in engineering structures could usually cause local variation in stiffness or damping, and therefore it is meaningful to detect the variation as early as possible for protecting the engineering structure from serious damage. In the study, a novel method is developed to detect and locate the local variation in stiffness and damping for structures based on transmissibility. Some important properties of transmissibility are first analytically revealed and, further, a variation detection indicator is proposed to locate the variation. The effectiveness of the proposed method is verified by numerical studies and the usefulness of it is demonstrated by application for detecting crack position in beam structures. The results show that the proposed new method has better performance than the three conventional transmissibility based methods when considering different frequency bands and noise.
| Reference Key |
li2015shocka
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|---|---|
| Authors | ;X. Z. Li;Z. K. Peng;X. J. Dong;W. M. Zhang;G. Meng |
| Journal | Nano letters |
| Year | 2015 |
| DOI |
10.1155/2015/850286
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| URL | |
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