J-integral evaluation of repaired cracks in AA7075-T6 structures subjected to uniaxial tensile stresses
| dc.contributor.author | Zouambi, Leila | |
| dc.contributor.author | Khodja, Malika | |
| dc.contributor.author | Oudad, Wahid | |
| dc.contributor.author | Fekirini, Hamida | |
| dc.contributor.author | Moller, Heinrich | |
| dc.contributor.author | Bouiadjra, Belabbes Bachir | |
| dc.date.accessioned | 2019-12-04T13:07:02Z | |
| dc.date.issued | 2019-08 | |
| dc.description.abstract | Bonded repairs using composite patches over metallic structures have been evaluated as a cost effective method to increase the life of damaged structures. The J-integral is a widely applied fracture mechanics parameter relating to the energy release associated with crack growth and is a measure of the deformation intensity at the crack tip. In practice, the calculated J-integral can be compared with a critical value for the material under consideration to predict fracture. This study aimed at providing an overview of the behavior of a cracked plate of AA7075-T6 alloy repaired with a boron-epoxy patch bonded with FM73 Adhesive layer. The Finite Element Method (FEM) using Abaqus Software 6.14 predicted the performance. The results show a considerable decrease in the value of the J-integral. This is due to the beneficial effect of the patch on the stress state at the crack tip. The best results were obtained from a uni-directional composite fibres orientation of 0°, where the fibers oriented parallel to the direction of load. A parametric analysis has been carried out to evaluate the effect of lay-up, load variation and crack mouth opening on the J-integral. It was found that the crack mouth opening displacement (CMOD) was reduced by 90–97%. | en_ZA |
| dc.description.department | Materials Science and Metallurgical Engineering | en_ZA |
| dc.description.embargo | 2020-08-01 | |
| dc.description.librarian | hj2019 | en_ZA |
| dc.description.uri | https://www.elsevier.com/locate/polytest | en_ZA |
| dc.identifier.citation | Zouambi, L., Khodja, M., Oudad, W. et al. 2019, 'J-integral evaluation of repaired cracks in AA7075-T6 structures subjected to uniaxial tensile stresses', Polymer Testing, vol. 77, art. 105874, pp. 1-11. | en_ZA |
| dc.identifier.issn | 0142-9418 (print) | |
| dc.identifier.issn | 1873-2348 (online) | |
| dc.identifier.other | 10.1016/j.polymertesting.2019.04.021 | |
| dc.identifier.uri | http://hdl.handle.net/2263/72513 | |
| dc.language.iso | en | en_ZA |
| dc.publisher | Elsevier | en_ZA |
| dc.rights | © 2019 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Polymer Degradation and Stability. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Polymer Degradation and Stability, vol. 77, art. 105874, pp. 1-11, 2019. doi : 10.1016/j.polymertesting.2019.04.021. | en_ZA |
| dc.subject | AA7075-T6 | en_ZA |
| dc.subject | J-integral | en_ZA |
| dc.subject | Cracks | en_ZA |
| dc.subject | Adhesive bonding | en_ZA |
| dc.subject | Boron/epoxy | en_ZA |
| dc.subject | Crack mouth opening displacement (CMOD) | en_ZA |
| dc.subject | Finite element method (FEM) | en_ZA |
| dc.subject.other | Engineering, built environment and information technology articles SDG-09 | |
| dc.subject.other | SDG-09: Industry, innovation and infrastructure | |
| dc.subject.other | Engineering, built environment and information technology articles SDG-12 | |
| dc.subject.other | SDG-12: Responsible consumption and production | |
| dc.title | J-integral evaluation of repaired cracks in AA7075-T6 structures subjected to uniaxial tensile stresses | en_ZA |
| dc.type | Postprint Article | en_ZA |