Experimental and Numerical Failure Analysis of Adhesive Composite Joints

In the first section of this work, a suitable data reduction scheme is developed to measure the adhesive joints strain energy release rate under pure mode-I loading, and in the second section, three types of adhesive hybrid lap-joints, that is, Aluminum-GFRP (Glass Fiber Reinforced Plastic), GFRP-GF...

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Main Author: Farhad Asgari Mehrabadi
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:International Journal of Aerospace Engineering
Online Access:http://dx.doi.org/10.1155/2012/925340
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author Farhad Asgari Mehrabadi
author_facet Farhad Asgari Mehrabadi
author_sort Farhad Asgari Mehrabadi
collection DOAJ
description In the first section of this work, a suitable data reduction scheme is developed to measure the adhesive joints strain energy release rate under pure mode-I loading, and in the second section, three types of adhesive hybrid lap-joints, that is, Aluminum-GFRP (Glass Fiber Reinforced Plastic), GFRP-GFRP, and Steel-GFRP were employed in the determination of adhesive hybrid joints strengths and failures that occur at these assemblies under tension loading. To achieve the aims, Double Cantilever Beam (DCB) was used to evaluate the fracture state under the mode-I loading (opening mode) and also hybrid lap-joint was employed to investigate the failure load and strength of bonded joints. The finite-element study was carried out to understand the stress intensity factors in DCB test to account fracture toughness using J-integral method as a useful tool for predicting crack failures. In the case of hybrid lap-joint tests, a numerical modeling was also performed to determine the adhesive stress distribution and stress concentrations in the side of lap-joint. Results are discussed in terms of their relationship with adhesively bonded joints and thus can be used to develop appropriate approaches aimed at using adhesive bonding and extending the lives of adhesively bonded repairs for aerospace structures.
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spelling doaj-art-884cd7a8f09e4a0ab088083c9c2287602025-02-03T06:14:04ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742012-01-01201210.1155/2012/925340925340Experimental and Numerical Failure Analysis of Adhesive Composite JointsFarhad Asgari Mehrabadi0Department of Mechanical Engineering, Islamic Azad University, Arak Branch, Arak 567-38135, IranIn the first section of this work, a suitable data reduction scheme is developed to measure the adhesive joints strain energy release rate under pure mode-I loading, and in the second section, three types of adhesive hybrid lap-joints, that is, Aluminum-GFRP (Glass Fiber Reinforced Plastic), GFRP-GFRP, and Steel-GFRP were employed in the determination of adhesive hybrid joints strengths and failures that occur at these assemblies under tension loading. To achieve the aims, Double Cantilever Beam (DCB) was used to evaluate the fracture state under the mode-I loading (opening mode) and also hybrid lap-joint was employed to investigate the failure load and strength of bonded joints. The finite-element study was carried out to understand the stress intensity factors in DCB test to account fracture toughness using J-integral method as a useful tool for predicting crack failures. In the case of hybrid lap-joint tests, a numerical modeling was also performed to determine the adhesive stress distribution and stress concentrations in the side of lap-joint. Results are discussed in terms of their relationship with adhesively bonded joints and thus can be used to develop appropriate approaches aimed at using adhesive bonding and extending the lives of adhesively bonded repairs for aerospace structures.http://dx.doi.org/10.1155/2012/925340
spellingShingle Farhad Asgari Mehrabadi
Experimental and Numerical Failure Analysis of Adhesive Composite Joints
International Journal of Aerospace Engineering
title Experimental and Numerical Failure Analysis of Adhesive Composite Joints
title_full Experimental and Numerical Failure Analysis of Adhesive Composite Joints
title_fullStr Experimental and Numerical Failure Analysis of Adhesive Composite Joints
title_full_unstemmed Experimental and Numerical Failure Analysis of Adhesive Composite Joints
title_short Experimental and Numerical Failure Analysis of Adhesive Composite Joints
title_sort experimental and numerical failure analysis of adhesive composite joints
url http://dx.doi.org/10.1155/2012/925340
work_keys_str_mv AT farhadasgarimehrabadi experimentalandnumericalfailureanalysisofadhesivecompositejoints