Experimental investigation of adhesively bonded patch repair of an inclined center cracked panel using DIC

Srilakshmi, R and M, Ramji (2014) Experimental investigation of adhesively bonded patch repair of an inclined center cracked panel using DIC. Journal of Reinforced Plastics and Composites, 33 (12). pp. 1130-1147. ISSN 0731-6844

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Abstract

epair of a cracked aircraft structure by an adhesively bonded composite patch has gained lot of importance in extending the fatigue life as well as improving the structural integrity of it. In the present work, an experimental study is carried out using digital image correlation (DIC) technique to analyze the behavior of single and double-sided adhesively bonded patch repair of an inclined center cracked aluminium panel subjected to uniaxial tensile loading. Further, the shear strain distribution in the adhesive layer is also estimated using the DIC technique. Shear strain concentration at the overlap edge in the adhesive layer is very high leading to patch debonding. Further, optimum patch dimension and patch thickness for the given cracked panel are arrived using a genetic algorithm-based optimization technique in conjunction with finite element analysis (FEA). With the optimum patch configuration, a 3-D FEA is further carried out and the obtained results are compared with the experimental prediction from DIC. The DIC prediction correlates with FEA contours on overall basis

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IITH Creators:
IITH CreatorsORCiD
M, RamjiUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: adhesively bonded repair; Digital image correlation; finite element analysis; genetic algorithm; optimization
Subjects: ?? sub4.9 ??
Divisions: Department of Physics
Depositing User: Team Library
Date Deposited: 17 Dec 2014 04:46
Last Modified: 24 Sep 2015 06:33
URI: http://raiith.iith.ac.in/id/eprint/1164
Publisher URL: http://dx.doi.org/10.1177/0731684414525245
OA policy: http://www.sherpa.ac.uk/romeo/issn/0731-6844/
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