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Title: Stress intensity factor estimation of repaired aluminum plate with bonded composite patch by combined genetic algorithms and FEM under temperature effects
Authors: Ergun, Emin
Tasgetiren, Suleyman
Topcu, Muzaffer
Keywords: Stress intensity factors
Composites patch
Finite element analysis
Genetic algorithms
Issue Date: Feb-2012
Publisher: NISCAIR-CSIR, India
Abstract: <span style="mso-ansi-language:EN-US" lang="EN-US">The finite element method (FEM) is used to analyze the behavior of repaired cracks in 2024-T3 aluminum with bonded patches made of unidirectional composite plates. Different plate thicknesses, number of patch layers, temperatures and crack lengths are considered in the analyses.&nbsp; Firstly, the K<sub>I</sub> stress intensity factor (SIF) is calculated by the finite element method using displacement correlation technique. Secondly, non-linear estimation models are developed using genetic algorithms (GA). The developed models are validated with experimental and numerical data. A genetic algorithm patch design (GAPD) is developed to estimate the stress intensity factor without any further finite element analysis. </span>
Description: 17-23
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.19(1) [February 2012]

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