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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kashtalyan, Maria
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2018Hashin’s bounds for elastic properties of particle-reinforced composites with graded interphasecitations
- 2016Transverse cracking in metal/ceramic composites with lamellar microstructurecitations
- 2014Analysis of bolted flanged panel joint for GRP sectional tankscitations
- 2011Residual stiffness of cracked cross-ply composite laminates under multi-axial in-plane loadingcitations
- 2007Stiffness and fracture analysis of laminated composites with off-axis ply matrix crackingcitations
- 2007Elastodynamics of interface cracks in laminated composites
- 2006Modelling off-axis ply matrix cracking in continuous fibre-reinforced polymer matrix composite laminatescitations
- 2005Analysis of composite laminates with intra- and interlaminar damagecitations
- 2002Modeling Multilayer Damage in Composite Laminates Under Static and Fatigue Loading
- 2002Analysis of local delaminations in composite laminates with angle-ply matrix crackscitations
- 2001Strain energy release rate for off-axis ply cracking in laminated composites
- 2000Analysis of fatigue damage mechanisms and residual properties of polymer matrix composites
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article
Analysis of local delaminations in composite laminates with angle-ply matrix cracks
Abstract
In this paper, local delaminations growing uniformly from the tips of angle-ply matrix cracks in composite laminates loaded in tension are modelled theoretically. A 2-D shear lag method is used to determine stresses in a laminate representative segment containing one crack and two crack tip delaminations. For the calculation of the strain-energy release rate (SERR) associated with delaminations, the damaged layer is replaced with an equivalent homogeneous one with effective elastic properties. Closed-form expressions for the total SERR and its mode I and mode II components as a linear function of the first partial derivatives of the effective elastic properties of the damaged layer with respect to delamination area are derived. Dependence of SERRs and the laminate stiffness properties on delamination area, crack density and ply orientation angle is examined for balanced [O2/χ2/-χ2]5 and unbalanced [O2/χ2]5 carbon/ epoxy laminates. The total SERR obtained in this study is compared to a simple closed-form expression for a uniform local delamination derived in earlier work by O'Brien (Local delamination in laminates with angle-ply matrix cracks: Part II Delamination Fracture Analysis and Fatigue Characterization. NASA Technical Memorandum 104076/AVS-COM Technical Report 91-B-011). It appears that matrix crack density and delamination size influence the SERR value significantly. © 2002 Elsevier Science Ltd. All rights reserved.