| People | Locations | Statistics |
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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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Chevalier, Luc
Université Gustave Eiffel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2024Identification of a Phase-Field Model for Brittle Fracture in Transversely Isotropic Elastic Materials with Application to Spruce Wood Specimens under Compression
- 2023Numerical Simulation of Infrared Heating and Ventilation before Stretch Blow Molding of PET Bottlescitations
- 2023Identification of polymer behavior from nonequibiaxial elongation test with temperature and strain rate conditions close to blow molding processcitations
- 2023In situ adjustment of a visco hyper elastic model for stretch blow molding process simulation of poly‐ethylene terephthalate bottlescitations
- 2022A new biaxial apparatus for tensile tests on Poly Ethylene Terephthalate optimized specimen at stretch blow molding conditionscitations
- 2022A multi-model approach for wooden furniture failure under mechanical loadcitations
- 2020Simulation of the Injection Stretch Blow Moulding Process: an Anisotropic Visco-hyperelastic Model for PET Behaviorcitations
- 2020Simulation of the Injection Stretch Blow Molding Process: An Anisotropic Visco‐Hyperelastic Model for Polyethylene Terephthalate Behaviorcitations
- 2018Caractérisation expérimentale et simulation stochastique du comportement des meubles à base de panneaux de particules
- 2017Self Heating during Stretch Blow Molding: an Experimental Numerical Comparison
- 2017Growth modeling and mechanical study of polymer spherulite aggregates
- 2017Modeling the Nucleation and Growth of Polymer Spherulites
- 2016An Anisotropic Visco-hyperelastic model for PET Behavior under ISBM Process Conditions
- 2015Simplified modeling of the convection and radiation heat transfers during the infrared heating of PET sheets and preforms Nomenclaturecitations
- 2015An Anisotropic Modeling of the Visco-hyperelastic Behaviour of PET under ISBM Process Conditions
- 2014Experimental global analysis of the efficiency of carbon fiber anchors applied over CFRP strengthened bricks, Construction and Building Materialscitations
- 2014Basis for viscoelastic modelling of polyethylene terephthalate (PET) near Tg with parameter identification from multi-axial elongation experimentscitations
- 2013Numerical simulation of the thermodependant viscohyperelastic behavior of polyethylene terephthalate near the glass transition temperature: Prediction of the self-heating during biaxial tension testcitations
- 2012On visco-elastic modelling of polyethylene terephthalate behaviour during multiaxial elongations slightly over the glass transition temperaturecitations
- 2012Numerical Simulation of the Viscohyperelastic Behaviour of PET near the Glass Transition Temperature
- 2011Identification of a Visco-Elastic Model for PET Near Tg Based on Uni and Biaxial Results
- 2010A three-dimensional network model for rubber elasticity: The effect of local entanglements constraintscitations
- 2010Thermoforming of a PMMA transparency near glass transition temperaturecitations
- 2010Modeling the nonlinear PMMA behavior near glass transition temperature: application to its thermoformingcitations
- 2008Microstructure changes in poly(ethylene terephthalate) in thick specimens under complex biaxial loadingcitations
- 2006Friction and wear during twin-disc experiments under ambient and cryogenic conditionscitations
- 2002Induced crystallization and orientation of poly(ethylene terephthalate) during uniaxial and biaxial elongation
Places of action
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article
Microstructure changes in poly(ethylene terephthalate) in thick specimens under complex biaxial loading
Abstract
We present an experimental investigation into the strain-induced crystalline microstructure, under biaxial elongation in Polyethylene terephthalate (PET). The aim of our study is to achieve both mechanical tests representative from the blow-moulding process, and micro- structural measurements. We therefore examine how the microstructure of a polymer subjected to a complex strain field evolves in terms of its crystalline ratio, its molecular orientation and the size of its crystallites. PET injection-moulded thick specimens were subjected to bi-axial elongation tests, both equibiaxial and sequential, using several elongation speeds, draw ratios and temperatures (above and close to Tg). The strain field was determined using a home-developed image correlation technique that allowed us to identify all the strain components at each point of the specimen, even when the strain field was not homogeneous. After the completion of the strain path, the specimens were either quenched at room temperature or cooled down very quickly using liquid nitrogen, in order to dissociate the contribution of stretching from that of relaxation. Microstructure observations were achieved by means of differential densimetry and WAXD (Wide Angle X-ray Diffraction) using a synchrotron beam. The results obtained confirm the strong link between the stress tensor and the crystals orientation and the crucial influence of molecular orientation on final microstructure (crystalinity ratio, crystals morphology).