Hossein Ramezani Dana

French National Centre for Scientific Research | CNRS · French National Centre for Scientific Research

Polylactic acid (PLA) is known as one of the greatest promising bioabsorbable and compostable polyesters with the capability of high molecular weight synthesis. Lactic acid condensation, azeotropic dehydration, and condensation ring-open polymerize of lactide are three methods for PLA polymerization. Comprehension of material properties is critical...

The additive manufacturing technique has been used more and more recently because of the advantages it offers, in particular in terms of the geometrical complexity of the produced parts. Recently, researchers are increasingly interested in flax fibres as a natural reinforcing for polymer-based filaments manufactured via the Fused Filament Fabricati...

Carbon fiber-reinforced polymer composites have been mainly used for several applications owing to their thermo-mechanical properties. Fused deposition modeling is a rapidly growing additive manufacturing technology owing to its ability to create a functional part with complex geometries. The tensile properties of polyamide-6 and carbon fiber-reinf...

Polylactic acid (PLA), one of the well-known bioabsorbable and compostable polyesters has rapidly evolved into a competitive commodity material over the last decades. To provide efficient therapy for the biomedical application domain understanding the PLA properties is the key tenets to achieve suitable chemical and biological properties. In most i...

In this work, we examine the relationships between the microstructure and the mechanical properties of glass fiber–reinforced polyamide 6,6 composite materials ( V f = 54%). These materials made by thermocompression incorporate different grades of high fluidity polyamide-based polymers and two types of quasi-UD glass fiber reinforcement. One is a c...

Binder jet 3D printing of ceramic materials is an additive manufacturing technology that enables the production of complex and multi-functional parts through the selective jet binding of precursor powder beds. The present study makes use of the 3D Sand Printing (3DSP) process to create moulds and cores in the casting industry. The use of the 3DSP c...

a. Laboratoire MSMP-EA 7351, Ecole nationale supérieure d'arts et métiers ParisTech, 2cours des arts et métiers, 13617 Aix-en-Provence, France Résumé : La présente étude porte sur le procédé d'impression 3D au sable habituellement utilisé pour la création de pièces et moules dans l'industrie de la fonderie. L'utilisation des pièces obtenues par ce...

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the author's institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal,...

Polymer additive manufacturing (PAM) is known as an effective mean to manufacture 3D dimensional pieces directly from a computer-aided design model in a layer-by-layer style. Recently, a new additive manufacturing technology has been integrated into the Freeformer-Arburg machine [1]. It was inspired by injection molding technology and creates plast...

Cette étude concerne l'analyse des propriétés mécaniques de pièces obtenues par Fabrication Additive Polymères (FAP). Utilisées traditionnellement pour des opérations de prototypage rapide, l'intégration de pièces FAP dans un cadre fonctionnel reste peu courante en comparaison aux pièces élaborées par injection sous pression, car leurs propriétés s...

This experimental work addresses the mechanical behavior of weaven UD glass fiber-thermoplastic composites designed for layered materials to be used in the automotive industry. The investigation was implemented in terms of the formulation of the PA66-based thermoplastic resins, the architecture of the fibrous reinforcement (warp spacer) and the gla...

This experimental work addresses the mechanical behavior of weaven UD glass fiber-thermoplastic composites designed for layered materials to be used in the automotive industry. The investigation was implemented in terms of the formulation of the PA66-based thermoplastic resins, the architecture of the fibrous reinforcement (warp spacer) and the gla...

Prediction of the mechanical behaviour of continuous fibre reinforcement during the forming process requires the identification of the friction coefficient and the different parameters which could affect the evolution of the friction between the dry reinforcement fabric or metal tools. In this study we evaluated the effect of weaving pattern, orien...

Moisture diffusion can induce a decrease of the mechanical stiffness of organic matrix composites. Recently, optical sensors have been used in order to measure the hygroscopic strains of organic matrix composites. In this study, the Bragg wavelength shift (λb) has been recorded at room temperature. The measurement have been achieved at higher tempe...

This study is focused on the finite element analysis of the hygro-elastic stresses experienced by unidirec-tional composite structures instrumented by Fiber Bragg Grating (FBG) sensors. One of the significant advantages of this method is that by taking into account the complex geometry of elaborated specimen and their different constituents with he...

This study is focused on the finite element analysis of the hygro-elastic stresses experienced by unidirec- tional composite structures instrumented by Fiber Bragg Grating (FBG) sensors. One of the significant advantages of this method is that by taking into account the complex geometry of elaborated specimen and their different constituents with h...

This study is devoted to the identification of the moisture expansion coefficients of composite materials by means of a novel measurement technique. This method is based on the insertion of Fibre Bragg Grating (FBG) sensors between composite layers. The sensor enables to measure the hygroscopic strain induced by moisture diffusion in the plane of t...

In order to be able to properly evaluate the in-use mechanical properties of high performance composite materials, it is useful to identify all the critical operations of the forming process which can degrade the row materials (i.e. the yarns for continuous fibre reinforcements). The weaving operation has been proved to be particularly critical. Th...

In order to be able to properly evaluate the in-use mechanical properties of high performance composite materials, it is useful to identify all the critical operations of the forming process which can degrade the row materials (i.e. the yarns for continuous fibre reinforcements). The weaving operation has been proved to be particularly critical. Th...

In order to be able to properly evaluate the in-use mechanical properties of high performance composite materials, it is useful to identify all the critical operations of the forming process which can degrade the row materials (i.e. the yarns for continuous fibre reinforcements). Those degradations begin during the weaving process which is the main...

In this work, moisture penetration in glass fiber-reinforced polymers was systematically investigated through both experiments and theoretical approaches. The diffusivities of the neat resin and those of unidirectional composite plates containing various glass fiber volume fractions have been identified through the analysis of hygro-thermal aging t...

This study is devoted to the identification of the moisture expansion coefficients of composite materials by means of a novel measurement technique. This method is based on the insertion of Fibre Bragg Grating (FBG) sensors between composite layers. The sensor enables to measure the hygroscopic strain induced by moisture diffusion in the plane of t...

In this work, moisture penetration in glass fiber-reinforced polymers was systematically investigated through both experiments and theoretical approaches. The diffusivities of the neat resin and those of unidirectional composite plates containing various glass fiber volume fractions have been identified through the analysis of hygro-thermal aging t...

This study is devoted to the identification of the moisture expansion coefficients of composite materials by means of a novel method of measurement. This method is based on the insertion of Fiber Bragg Grating (FBG) sensors in the composite structure. The sensor enables to measure the hygroscopic strain induced by the diffusion of moisture in the c...

Cette étude porte sur l’identification des coefficients de dilatation hygroscopique de matériaux composites au moyen d’une nouvelle technique de mesure. Celle-ci repose sur l’insertion de capteurs optiques à réseaux de Bragg au cœur de la structure composite. Cette méthode est dédiée à la mesure de la déformation hygroscopique induite par la diffus...

Ramezani Dana, H., Perronnet, A., Fréour, S., Casari, P., Jacquemin, F. (2011). Identification of moisture diffusion parameters in organic matrix composites, 16th International Conference on Composite Structures (ICCS16), 28-30 Juin, Porto, Portugal.

Dans ce travail, la diffusion d'humidité dans les polymères renforcés par fibres de verre a été étudiée par les deux approches théoriques et expérimentales. Les diffusivités de la résine pure et du composite unidirectionnel, contenant différentes fractions volumiques de fibres de verre, ont été identifiées par l’intermédiaire d’essais de vieillisse...