Experimental verifications of a structural damage identification technique using reduced order finite-element model

Rui Li; Li Zhou; Jann N. Yang

doi:10.1117/12.845593

31 March 2010 Experimental verifications of a structural damage identification technique using reduced order finite-element model

Rui Li, Li Zhou, Jann N. Yang

Author Affiliations +

Proceedings Volume 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010; 76470A (2010) https://doi.org/10.1117/12.845593
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

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.

Citation Download Citation

Rui Li, Li Zhou, and Jann N. Yang "Experimental verifications of a structural damage identification technique using reduced order finite-element model", Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76470A (31 March 2010); https://doi.org/10.1117/12.845593

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