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Proceedings Paper

Experimental verifications of a structural damage identification technique using reduced order finite-element model
Author(s): Rui Li; Li Zhou; Jann N. Yang
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Paper Abstract

An objective of the structural health monitoring system is to identify the state of the structure and to detect the damage when it occurs. Analysis techniques for the damage identification of structures, based on vibration data measured from sensors, have received considerable attention. Recently, a new damage tracking technique, referred to as the adaptive quadratic sum-square error (AQSSE) technique, has been proposed, and simulation studies demonstrated that the AQSSE technique is quite effective in identifying structural damages. In this paper, the adaptive quadratic sumsquare error (AQSSE) along with the reduced-order finite-element method is proposed to identify the damages of complex structures. Experimental tests were conducted to verify the capability of the proposed damage detection approach. A series of experimental tests were performed using a scaled cantilever beam subject to the white noise and sinusoidal excitations. The capability of the proposed reduced-order finite-element based adaptive quadratic sum-square error (AQSSE) method in detecting the structural damage is demonstrated by the experimental results.

Paper Details

Date Published: 31 March 2010
PDF: 8 pages
Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76470A (31 March 2010); doi: 10.1117/12.845593
Show Author Affiliations
Rui Li, Nanjing Univ. of Aeronautics and Astronautics (China)
Li Zhou, Nanjing Univ. of Aeronautics and Astronautics (China)
Jann N. Yang, Univ. of California, Irvine (United States)


Published in SPIE Proceedings Vol. 7647:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
Masayoshi Tomizuka, Editor(s)

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