Based on the new conception of natural frequency vector (NFV) and natural frequency vector assurance criterion (NFVAC), a new damage detection method using the natural frequencies as damage character is described in detail. For a specific structure, a series of small damage states can be simulated and the NFVs of these damaged structures can be calculated and used to build the damage feature database of the structure. Then, the values of natural frequency vector assurance criterion (NFVAC) which are calculated between the damage states in the damage feature database and the actual structure are used as damage index. An 8-story shear frame model is adopted as an example to show the feasibility and validity of the proposed method. Both numerical simulations and model experiments for damage detection are performed, the results demonstrate that using NFVAC, the damage location can be identified correctly and the damage extents can be estimated as well.
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ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
October 28–30, 2008
Ellicott City, Maryland, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4332-1
PROCEEDINGS PAPER
Structural Damage Detection Based on Natural Frequency Vector Available to Purchase
Zhichun Yang,
Zhichun Yang
Northwestern Polytechnical University, Xi’an, China
Search for other works by this author on:
Le Wang
Le Wang
Northwestern Polytechnical University, Xi’an, China
Search for other works by this author on:
Zhichun Yang
Northwestern Polytechnical University, Xi’an, China
Le Wang
Northwestern Polytechnical University, Xi’an, China
Paper No:
SMASIS2008-372, pp. 33-40; 8 pages
Published Online:
July 13, 2009
Citation
Yang, Z, & Wang, L. "Structural Damage Detection Based on Natural Frequency Vector." Proceedings of the ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2. Ellicott City, Maryland, USA. October 28–30, 2008. pp. 33-40. ASME. https://doi.org/10.1115/SMASIS2008-372
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