Stress intensity factor for repaired crack with bonded composite patch under thermo-mechanical loading

In this study, the finite element method is used to analyze the effect of the thermal residual stresses resulting from adhesive curing on the performances of the bonded composite repair in aircraft structures. The stress intensity factor at the crack tip is chosen as the fracture criterion in order...

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Veröffentlicht in:Journal of reinforced plastics and composites 2011-03, Vol.30 (5), p.416-424
Hauptverfasser: Mhamdia, R., Bouadjra, B. Bachir, Serier, B., Ouddad, W., Feaugas, X., Touzain, S.
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container_end_page 424
container_issue 5
container_start_page 416
container_title Journal of reinforced plastics and composites
container_volume 30
creator Mhamdia, R.
Bouadjra, B. Bachir
Serier, B.
Ouddad, W.
Feaugas, X.
Touzain, S.
description In this study, the finite element method is used to analyze the effect of the thermal residual stresses resulting from adhesive curing on the performances of the bonded composite repair in aircraft structures. The stress intensity factor at the crack tip is chosen as the fracture criterion in order to estimate the repair performances. The effects of the curing temperature, the geometrical properties of the patch, and the adhesive properties on the variation of the stress intensity factor are analyzed. The obtained results show a significant negative effect of the thermal residual stresses on the repair efficiency and this effect can be reduced if the different repair parameters are optimized.
doi_str_mv 10.1177/0731684410397899
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subjects Adhesive bonding
Aircraft structures
Application fields
Applied sciences
Bonding
Chemical Sciences
Curing
Exact sciences and technology
Fracture mechanics
Polymer industry, paints, wood
Repair
Residual stress
Stress intensity factor
Technology of polymers
title Stress intensity factor for repaired crack with bonded composite patch under thermo-mechanical loading
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