| 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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George, Matthieu
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2022Bridging steady-state and stick-slip fracture propagation in glassy polymerscitations
- 2021Bridging steady-state and stick-slip fracture propagation in glassy polymerscitations
- 2020Microstructure Characterization of Oceanic Polyethylene Debriscitations
- 2020Microstructure Characterization of Oceanic Polyethylene Debriscitations
- 2019A comparative study of degradation mechanisms of PBSA and PHBV under laboratoryscale composting conditionscitations
- 2019New Insights For The Fragmentation Of Plastics Into Microplastics In The Ocean
- 2019Experimental and theoretical study of the erosion of semi-crystalline polymers and the subsequent generation of microparticles.citations
- 2018In Situ AFM Investigations and Fracture Mechanics Modeling of Slow Fracture Propagation in Oxide and Polymer Glasses.citations
- 2018In situ AFM investigation of slow crack propagation mechanisms in a glassy polymercitations
- 2016Bottom-up model for understanding the effects of wheat endosperm microstructure on its mechanical strengthcitations
- 2015Multiscale investigation of stress-corrosion crack propagation mechanisms in oxide glassescitations
- 2014Numerical modeling of wheat fractionation role of starch volume fraction
- 2013Nano-mechanical properties of starch and gluten biopolymers from atomic force microscopycitations
- 2013Adhesion properties of wheat-based particlescitations
- 2011Quantitative Analysis of Crack Closure Driven by Laplace Pressure in Silica Glasscitations
- 2009Mechanical effect of capillary forces in the crack tip of a DCDC specimen
- 2008Dynamic condensation of water at crack tips in fused silica glasscitations
- 2007FORMATION AND EVOLUTION OF A CONFINED LIQUID CONDENSATE AT THE CRACK TIP IN GLASSES
- 2007Effect of stress gradient at the vicinity of a crack tip on ionic diffusion in silicate glasses : an AFM study
- 2006FORMATION AND EVOLUTION OF A CONFINED LIQUID CONDENSATE AT THE CRACK TIP IN GLASSES
- 2006Effect of stress gradient at the vicinity of a crack tip on ionic diffusion in silicate glasses : an AFM study
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document
Numerical modeling of wheat fractionation role of starch volume fraction
Abstract
Wheat endosperm is a cemented granular material composed of a binary-sized mixture ofalmost spherical starch granules bounded to one another with an amorphous proteinmatrix. The milling properties of wheat grains depend on this typical microstructure, largelycontrolled by the genetic background and the growing conditions. An original Atomic ForceMicroscopy nano-scratch methodology has been developed [1] to assess the localrheological properties of the protein matrix, the starch granules and their interface. Thedetermined relative stiffness and failure strength, together with information on the phasedistribution, were then used to construct 2D numerical samples of wheat endosperm. Thegranular structure of the sample with different granular packing was computed using aMolecular Dynamics approach. The protein matrix was added in the form of bridgesconnecting neighboring particles. The samples were then meshed using a triangular latticeof one-dimensional spring elements that were characterized by stiffness and yield force.The rheological properties of each element were set according to the location of its twonodes leading to five different elements: starch, matrix, starch-matrix, starch-starch andvoids. The samples were then subjected to an increasing uniaxial tensile stress until failureusing an iterative procedure based on conjugate gradient minimization. The LatticeElement Method, developed by Topin [2,3], was used for the simulations and a parametricstudy was performed where the protein content, the starch granular packing and thestarch-protein adhesion, suggested to be responsible of the wheat fragmentation, werevaried. The results showed that, depending on the sample porosity, the bulk elasticproperties do not follow the mixing law of diluted composites, highlighting the granularbackbone effect of percolating particles. A non-linear evolution of the bulk elastic modulusas a function of the sample porosity was also noted, with little effect of the granule solidfraction. Concerning the failure properties, the ...