| 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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Touchard, Fabienne
Institut Pprime
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2024Influence of hydrothermal fatigue on mechanical properties and damage mechanisms of hemp-reinforced biocomposites and comparison with glass-reinforced composites
- 2024Additive manufacturing of an electrically triggered actuator: electro-thermo-mechanical behaviour of a carbon black/polylactic acid composite.
- 2024Development of a sustainable flax fiber-reinforced composite for low energy impact
- 2024The yarn/matrix interface in composite materials: fragmentation tests and micro-CT based digital volume correlation
- 2023Tensile Behavior of [0/90]7 Hemp/Elium Biocomposites after Water Aging: In-Situ Micro-CT Testing and Numerical Analysiscitations
- 20233D printing of continuous cellulose fibre composites: microstructural and mechanical characterisationcitations
- 2023Low energy impact behavior of unidirectional and cross-ply flax/epoxy laminates and comparison with similar glass/epoxy laminatescitations
- 2023Durability of Joule effect of 3D printed carbon black/polylactic acid: Electrical cyclic tests and analytical modellingcitations
- 2023ELECTRO-THERMO-MECHANICAL ANALYSIS OF CB/PLA SAMPLES MADE BY ADDITIVE MANUFACTURING
- 2022Influence of Hygrothermal Aging on Mechanical Properties and Damage Mechanisms of Hemp-Reinforced Biocompositescitations
- 2022Effect of fibrillation of flax mat binder on the impact response of unidirectional flax/epoxy composites and comparison with a glass/epoxy composite
- 2022Effect of fibrillation of flax mat binder on the impact response of unidirectional flax/epoxy composites and comparison with a glass/epoxy composite.
- 2022Hierarchical Flax Fibers by ZnO Electroless Deposition: Tailoring the Natural Fibers/Synthetic Matrix Interphase in Compositescitations
- 2022Influence of wet/dry cycling on mechanical properties of hemp-reinforced biocomposites.
- 2021Mechanical Properties of Natural Fiber Compositescitations
- 2021Mechanical Properties of Natural Fiber Compositescitations
- 2021Interfacial adhesion quality in 3D printed continuous CF/PA6 composites at filament/matrix and interlaminar scalescitations
- 2020Fatigue behaviour of flax-basalt/epoxy hybrid composites in comparison with non-hybrid compositescitations
- 2020Effects of oxygen and tetravinylsilane plasma treatments on mechanical and interfacial properties of flax yarns in thermoset matrix compositescitations
- 2019Influence of the stacking sequence on the low-energy impact resistance of flax/PA11 compositecitations
- 2019INTERFACIAL ADHESION OF BASALT FIBRE REINFORCED POLYMER COMPOSITES
- 2018Study of plant fibre composites with damage induced by laser and mechanical impactscitations
- 2018Study of plant fibre composites with damage induced by laser and mechanical impactscitations
- 2017Mechanical and laser impact effects on woven composites with hemp or glass fibrescitations
- 2016Influence of constituents and process parameters on mechanical properties of flax fibre-reinforced polyamide 11 compositecitations
- 2016Numerical modeling of laser-induced shock experiments for the development of the adhesion test for bonded composite materialscitations
- 2015Comparison of damage behaviour of different plant fibre composites under laser impact loading
- 2012CYCLIC FATIGUE BEHAVIOR OF WOVEN HEMP/EPOXY COMPOSITE: DAMAGE ANALYSIS
- 2010Heterogeneous tensile behavior of impact-modified polypropylene plates processed by injection moulding
- 2010Heterogeneous tensile behavior of impact-modified polypropylene plates processed by injection moulding
- 2009Effet de la séquence d'empilement sur le comportement en fatigue thermomécanique de multicouches polymère/composite = Stacking sequence effect on polymer/composite multi-layers behaviour submitted to thermomechanical cyclic loadings
Places of action
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document
Heterogeneous tensile behavior of impact-modified polypropylene plates processed by injection moulding
Abstract
Due to the fast cooling of polymer on the mould surface, the injection moulding process is known to be responsible of property gradients through thickness. Nevertheless, the mechanical behaviour is usually characterized by considering an homogeneous polymer, even when tensile test specimens processed by injection moulding are used. In order to characterize the local three-dimensional behaviour, a new set up based on digital image correlation has been developed and applied to specimens machined from injection moulded plates. This experimental set up allows to measure the strain fields on both front and lateral sides of specimens with a good accuracy. In this study, two impact modified polypropylenes have been analyzed under tensile loading. These polymers are made of ethylene-propylene rubber nodules and lamellar talc particles embedded in a polypropylene matrix. They differ from the volumetric amount of talc (4% in material A, 0,5% in material B). Unlike neat polypropylene, these materials do not exhibit a necking phenomenon in tension. The axial strain and transverse strain through specimen width remain homogeneous along the gauge length during the tensile test. On the other hand, the transverse strains through thickness differ for both polymers. Polymer B exhibits large gradients of εzz strain between the centre and the plate surfaces while polymer A presents an homogeneous transverse deformation. As confirmed by microstructure investigation, these results reveal a large volumetric dilatation due to void growth for both polymers, but for polymer B, the large transverse gradient measured is due to a high volumetric dilatation gradient through plate thickness. The good thermal conductivity of talc could explain the different behaviour between the two polymers and the origin of volumetric dilatation gradient. In polymer B, the different cooling rates between plate core and surfaces induce large residual stresses which could create damage and initiate voids in plate core.