Experimental Testing of a Cross-Entropy Algorithm to Detect Damage

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Title: Experimental Testing of a Cross-Entropy Algorithm to Detect Damage
Authors: González, Arturo
Covián, E.
Casero, M.
Cooper, John
Permanent link: http://hdl.handle.net/10197/6228
Date: Jul-2013
Online since: 2014-12-11T12:54:19Z
Abstract: Cross-entropy optimization has recently been applied to the damage detection in structures subject to static loading. The optimization procedure minimizes the error between the measured deflection data and theoretical deflection data obtained from artificially generated finite element models based on assumed statistical distributions of stiffness for each discretized element. Following a number of iterations, the finite element model with stiffness properties producing deflections closer to reality is established as the mathematical model closest to the true structure. However, while previous testing of the algorithm has been relatively successful, it has been limited to theoretical simulations. Therefore, this paper conducts lab experiments on a beam loaded statically to test the accuracy of the algorithm. Deflections are measured for beam scenarios under different loading levels. The accuracy of the results is discussed and recommendations are made to improve the performance of the algorithm when implemented in practice.
Type of material: Journal Article
Publisher: Trans Tech Publications
Journal: Key Engineering Materials
Volume: 569-570
Start page: 1170
End page: 1178
Copyright (published version): 2013 Trans Tech Publications
Keywords: Damage assessmentStatic testingOptimizationFinite element modeling
DOI: 10.4028/www.scientific.net/KEM.569-570.1170
Language: en
Status of Item: Peer reviewed
Appears in Collections:Civil Engineering Research Collection

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