Search results for "MATRICE"
showing 10 items of 218 documents
Development and characterization of a bio-based epoxy matrix for high-grade bio-based composites
2019
This study aims to develop 100% bio-based hemp/epoxy composites for semi-structural and structural applications. The thermal and mechanical performances of a 100% bio-based matrix derived from biomassare evaluated and reveal properties in the same order of magnitude as those obtained for polyepoxides based on DGEBA, that means a glass transition temperature of approximately 150°C and mechanical properties in the order of 120MPa for the maximum stress and 3.2 GPa for the tangent apparent modulus. This natural origin matrix is then used for the manufacture of composites reinforced with hemp rovings. The bending properties of these 100% bio-based materials are equivalent to those determined fo…
Development and characterization of a bio-based epoxy matrix for high-grade bio-based composites
2019
This study aims to develop 100% bio-based hemp/epoxy composites for semi-structural and structural applications. The thermal and mechanical performances of a 100% bio-based matrix derived from biomassare evaluated and reveal properties in the same order of magnitude as those obtained for polyepoxides based on DGEBA, that means a glass transition temperature of approximately 150°C and mechanical properties in the order of 120MPa for the maximum stress and 3.2 GPa for the tangent apparent modulus. This natural origin matrix is then used for the manufacture of composites reinforced with hemp rovings. The bending properties of these 100% bio-based materials are equivalent to those determined fo…
La "Paléoshellomique" dans les starting-blocks
2021
La matrice minérale de l'eau influence la perception de la flaveur chlore
2010
poster exposé au 5e Congrès Vitagora Goût-Nutrition-Santé les 23-24 mars 2010 à Dijon (FRANCE); Objectif de l’étude : Le traitement par le chlore garantit une qualité bactériologique irréprochable à l’eau de réseau. La flaveur du chlore est un des reproches majeurs à l’encontre de l’eau du robinet. Le goût d’une eau est influencé par : a) la quantité totale de minéraux présents dans celle-ci (Teillet et al., 2007) [1] ; b) La nature et la proportion relative de ces minéraux (Puget, Curé et al., 2009) [2]. L’objectif de cette étude est de déterminer si le goût intrinsèque de l’eau, induit par sa matrice minérale, peut avoir une influence sur la perception de la flaveur chlore.
Interactions between aroma compounds and food matrix
2017
Interactions between aroma compounds and food matrix
De Cratyle à la TME : une longue tradition dans le débat sur la motivation ou l’arbitraire des mots
2016
In the specialized literature, the concepts of motivation and arbitrariness refer to very different realities. Using some essential readings, we endeavour to clarify these points in the "motivated vs arbitrary nature of lexical forms" debate inaugurated in Plato's Cratylus. Amongst other things, these reveal that the lexical motivation phenomenon is more complex than the supporters of the Saussurian doxa of arbitrariness would have us believe. Even if a considerable amount of time separates the first forms of language from the most ancient linguistic forms available to us and any attempt to reconstruct these original forms is based upon an illusion, it is, nevertheless, possible to decipher…
Matrices de pondérations et contexte spatio-temporel en économétrie spatiale
2013
International audience
Study of acoustic properties and impact behavior of porous materials homogeneous type metal foams and inhomogeneous
2015
This work is concerned with the theoretical and experimental study of the acoustical properties of macroscopically homogenous and inhomogeneous porous media as well as their mechanical response to impacts. The model of Johnson - Champoux - Allard appeared adapted for the acoustical modeling. This model, associated with a recently developed approach involving the concept of parallel transfer matrices has lead to a new approach of macroscopically inhomogeneous porous materials based on “mixtures of materials”. Furthermore, a parametric study of the absorption coefficient as a function of porosity and frequency has been proposed. The maximums of absorption as well as the envelop of the absorpt…
Manufacturing and characterization of Al matrix composites with nano reinforcements via cold spraying
2019
This study aims at developing new routes for manufacturing Al matrix composites (AMCs) strengthened with nano reinforcements by solid-state cold spraying (CS) process. Three different AMCs including CNTs/Al, TiB2/AlSi10Mg and TiB2/7075Al were successfully fabricated by CS of the composite powders prepared using different approaches. The microstructure evolution of as-sprayed composite samples was investigated by means of different characterization methods like X-ray diffraction (XRD), scanning (SEM) and transmission electron microscopy (TEM) and electron backscatter diffraction (SEM/EBSD). The adhesion strength, tribological behaviour, corrosion properties as well as the mechanical performa…
ORNAMENTAL SIGN LANGUAGE IN THE FIRST ORDER TRACERY BELTS
2010
18 pages; We consider ornamental sign language of first order where principles of sieve displacement, of asymmetric building blocks as base of ornament symmetry, color exchangeability and side equivalence principles work. The generic aspects of sieve and genesis of ornamental pattern and ornament sign in it are discussed. The hemiolia principle for ornamental genesis is introduced. The discoverer of most of these principles were artist Modris Tenisons [4, 5, 6, 7 (refs. 23, 24), 8 (ref. 65)]. Here we apply systematical research using simplest mathematical arguments. We come to conclusions that mathematical argument in arising ornament is of much more significance than simply symmetries in i…