1 April 2010 Experimental verifications of a structural damage identification technique using reduced order finite-element model
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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.
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Rui Li, Li Zhou, 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 (1 April 2010); doi: 10.1117/12.845593; https://doi.org/10.1117/12.845593
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KEYWORDS
Finite element methods

Sensors

Damage detection

Error analysis

Electroluminescence

Structural health monitoring

System identification

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