Chapter
Apr 26, 2012
Multi-Functional Smart Aggregate-Based Structural Health Monitoring of Circular Reinforced Concrete Columns Subjected to Seismic Excitations
Authors: Haichang Gu [email protected], Yashar Moslehy [email protected], David Sanders [email protected], Gangbing Song [email protected], and Y. L. Mo [email protected]Author Affiliations
Publication: Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments
Abstract
In this paper, a recently developed multi-functional piezoceramic-based device, named smart aggregate, is used for the health monitoring of concrete columns subjected to shake table excitations. Two reinforced concrete columns instrumented with smart aggregates were fabricated and tested with a recorded seismic excitation at the structural laboratory at University of Nevada-Reno In the tests, the smart aggregates were used to perform multiple functions which included the dynamic seismic response detection, structural health monitoring and white noise response detection. Experimental results showed that the acceleration level could be evaluated from the amplitude of dynamic seismic response; the damage status at different locations was evaluated by a wavelet packet-based damage index matrix; and the first modal frequency obtained from the white noise response decreased with the increment of the damage severity. The proposed multi-functional smart aggregates have great potential in the structural health monitoring of large-scale concrete structures.
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© 2010 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Department of Mechanical Engineering, University of Houston; 4800 Calhoun, Houston, TX, 77004, USA. E-mail: [email protected]
Department of Civil and Environmental Engineering, University of Houston; 4800 Calhoun, Houston, TX, 77004, USA. E-mail: [email protected]
Department of Civil and Environmental Engineering, University of Nevada, Reno, Reno, NV 89557. E-mail: [email protected]
Department of Mechanical Engineering, University of Houston; 4800 Calhoun, Houston, TX, 77004, USA. E-mail: [email protected]
Department of Civil and Environmental Engineering, University of Houston; 4800 Calhoun, Houston, TX, 77004, USA. E-mail: [email protected]
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