Receptance-based structural health monitoring approach for bridge structures

S. A. Jang; B. F. Spencer Jr.

doi:10.1117/12.817614

8 April 2009 Receptance-based structural health monitoring approach for bridge structures

S. A. Jang, B. F. Spencer Jr.

Proceedings Volume 7295, Health Monitoring of Structural and Biological Systems 2009; 72952A (2009) https://doi.org/10.1117/12.817614
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

A number of structural health monitoring strategies have been proposed recently that can be implemented in smart sensor networks. Many are based on changes in the experimentally determined flexibility matrix for the structure under consideration. However, the flexibility matrix contains only static information; much richer information is potentially available by considering the dynamic flexibility, or receptance, of the structure. Recently, the stochastic dynamic DLV method was proposed based on the changes in the dynamic flexibility matrix employing centrally collected output-only measurements. This paper extends the stochastic dynamic DLV method so that it can be implemented on a decentralized network of smart sensors. New damage indices are derived that provide robustness estimates of damage location. The smart sensor network is emulated with wired sensors to demonstrate the potential of the proposed method. The efficacy of the proposed approach is demonstrated experimentally using a model truss structure.

Citation Download Citation

S. A. Jang and B. F. Spencer Jr. "Receptance-based structural health monitoring approach for bridge structures", Proc. SPIE 7295, Health Monitoring of Structural and Biological Systems 2009, 72952A (8 April 2009); https://doi.org/10.1117/12.817614

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