Download or read book Comportement m canique sous sollicitations multi axiales d un composite carbone carbone written by Jérôme Pailhes and published by . This book was released on 1999 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les performances thermomécaniques des composites carbone/carbone permettent leur utilisation thermostructurale. Afin de dimensionner correctement les structures, il est nécessaire de connaître le comportement mécanique du composite sous des sollicitations multiaxiales. Un appareillage spécifique de sollicitations multiaxiales de type traction-cisaillement a été conçu et réalisé lors de ce travail. On a déterminé le comportement mécanique et les différents mécanismes d'endommagement de traction ou de compression dans les axes et hors axes d'orthotropie du matériau. Le modèle utilisé pour rendre compte de cet endommagement est fondé sur la mécanique des milieux continus endommageables, les déformations anélastiques induites par l'endommagement étant traitées par la théorie de la plasticité. Les observations au microscope des modes d'endommagement de la matrice conduisent à la formulation d'hypothèses simplificatrices physiquement acceptables. Le modèle a été identifié à l'aide des essais de traction et de compression dans les axes de symétrie du matériau. Les essais de traction/cisaillement ont permis de compléter l'étude du comportement du matériau et de valider la loi de comportement mécanique sous sollicitations multiaxiales proposée.
Download or read book Etude du comportement visco lastique d un composite carbon poxyde bismal imide IM6 5245C written by Frej Mighri and published by . This book was released on 1989* with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mod lisations num riques multi chelles du comportement dynamique de mat riaux composites sous sollicitations tribologiques written by Guillaume Peillex and published by . This book was released on 2007 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Afin de comprendre les mécanismes d’usure des composites utilisés dans les freins aéronautiques, il faut dissocier le rôle de la mécanique de ceux de la thermique et de la physico-chimie. Pour cela, un modèle mécanique, numérique par éléments finis, d’un composite à deux échelles (macroscopique et microscopique) et sous sollicitations de contact frottant en dynamique, est crée. La convergence est obtenue grâce à une loi de frottement particulière. La mise en place d’une approche multiéchelles par homogénéisation-relocalisation a permis de dissocier l’influence de l’échelle macroscopique, fixant les régimes de vibrations possibles, de celle de l’échelle mésoscopique, sélectionnant le régime effectif. Un scénario d’endommagement basé sur les estimations des contraintes locales aux deux échelles du matériau a pu être mis au point et rejoins des observations expérimentales. Le modèle permet aussi de caractériser l’influence de certains paramètres de fabrication du matériau sur son comportement tribologique.
Download or read book Composite Materials written by Jean-Marie Berthelot and published by Springer. This book was released on 2013-02-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical engineering, an engineering discipline borne of the needs of the in dustrial revolution, is once again asked to do its substantial share in the call for industrial renewal. The general call is urgent as we face profound issues of produc tivity and competitiveness that require engineering solutions, among others. The Mechanical Engineering Series features graduate texts and research monographs intended to address the need for information in contemporary areas of mechanical engineering. The series is conceived as a comprehensive one that covers a broad range of concentrations important to mechanical engineering graduate education and re search. We are fortunate to have a distinguished roster of consulting editors on the advisory board, each an expert in one of the areas of concentration. The names of the consulting editors are listed on the next page of this volume. The areas of concentration are applied mechanics, biomechanics, computational mechan ics, dynamic systems and control, energetics, mechanics of materials, processing, thermal science, and tribology.
Download or read book Rupture d un composite carbone carbone 3D sous sollicitations complexes written by Catherine Davy (docteur en mécanique.) and published by . This book was released on 2001 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comportement m canique de mat riaux composites written by Pascale Joguet and published by . This book was released on 1989 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE COMPORTEMENT DE TUBES BOBINES EN MATERIAUX COMPOSITES, DE TYPE KEVLAR/EPOXY ET CARBONE/EPOXY, SONT ETUDIES DANS DES CAS DE SOLLICITATIONS SIMPLES OU COUPLEES (TRACTION, TORSION, PRESSION INTERNE), EN COUPLANT UN MODELE MECANIQUE D'ENDOMMAGEMENT ANISOTROPE A UNE THEORIE ELASTIQUE DE PLAQUES STRATIFIEES. ON CHERCHE A PREVOIR LE COMPORTEMENT DE STRUCTURES D'EMPILEMENT COMPLEXE A PARTIR DES CARACTERISTIQUES MECANIQUES DU COMPOSITE UNIDIRECTIONNEL ET DE L'IDENTIFICATION DES LOIS D'ENDOMMAGEMENT SUR UN BOBINAGE A 90#O. LES PREVISIONS DES SEUILS D'APPARITIONS DE LA NON-LINEARITE DU COMPORTEMENT ET DE LA RUPTURE DU COMPOSITE GLOBAL, SONT ENVISAGEES A PARTIR DE L'APPLICATION COUCHE PAR COUCHE DE TROIS CRITERES QUADRATIQUES (HASHIN, HILL ET TSAI), SOUS SOLLICITATIONS UNIAXIALES OU BIAXIALES. ON COMPARE LES RESULTATS DE CETTE MODELISATION AVEC LE COMPORTEMENT EXPERIMENTAL SOUS CHARGEMENTS MONOTONES RADIAUX, POUR DEUX TYPES DE STRATIFICATIONS DANS LE CAS DES TUBES KEVLAR/EPOXY. LES ECARTS OBSERVES SONT ANALYSES EN CONSIDERANT LES HYPOTHESES DE LA MODELISATION (PLIS CROISES EN ALLER-RETOUR) ET LES RESULTATS D'OBSERVATIONS MICROSTRUCTURALES. ON MET EN EVIDENCE UNE CORRELATION ENTRE LES COMPORTEMENTS ET LES DOMMAGES DETECTES PAR LES CONTROLES NON DESTRUCTIFS. UN AUTRE MODELE POUR LES MATERIAUX VISCOELASTIQUES ENDOMMAGEABLES CONSIDERE LE MATERIAU COMPOSITE COMME HOMOGENE. L'UTILISATION DE CE MODELE PERMET DE DETERMINER LA PART D'ENDOMMAGEMENT ET DE VISCOELASTICITE DANS LE COMPORTEMENT D'UN TUBE KEVLAR/EPOXY, A PARTIR DES BOUCLES D'HYSTERESIS ET DES DEFORMATIONS RESIDUELLES OBTENUES PAR CHARGEMENTS REPETES PROGRESSIFS. CETTE ETUDE FAIT PARTIE D'UN AXE DE RECHERCHE VISANT A ETABLIR UNE MODELISATION COMPLETE DU COMPORTEMENT DES MATERIAUX COMPOSITES
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1990 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Identification of Composites written by A. Vautrin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Major Accomplishments in Composite Materials and Sandwich Structures written by I. M. Daniel and published by Springer Science & Business Media. This book was released on 2009-10-20 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book collects major research contributions in composite materials and sandwich structures supported by the U.S. Office of Naval Research. It contains over thirty chapters written by experts and serves as a reference and guide for future research.
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Download or read book Ceramic Matrix Composites written by Narottam P. Bansal and published by John Wiley & Sons. This book was released on 2014-10-27 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive source of information on various aspects of ceramic matrix composites (CMC). It covers ceramic and carbon fibers; the fiber-matrix interface; processing, properties and industrial applications of various CMC systems; architecture, mechanical behavior at room and elevated temperatures, environmental effects and protective coatings, foreign object damage, modeling, life prediction, integration and joining. Each chapter in the book is written by specialists and internationally renowned researchers in the field. This book will provide state-of-the-art information on different aspects of CMCs. The book will be directed to researchers working in industry, academia, and national laboratories with interest and professional competence on CMCs. The book will also be useful to senior year and graduate students pursuing degrees in ceramic science and engineering, materials science and engineering, aeronautical, mechanical, and civil or aerospace engineering. Presents recent advances, new approaches and discusses new issues in the field, such as foreign object damage, life predictions, multiscale modeling based on probabilistic approaches, etc. Caters to the increasing interest in the application of ceramic matrix composites (CMC) materials in areas as diverse as aerospace, transport, energy, nuclear, and environment. CMCs are considered ans enabling technology for advanced aeropropulsion, space propulsion, space power, aerospace vehicles, space structures, as well as nuclear and chemical industries. Offers detailed descriptions of ceramic and carbon fibers; fiber-matrix interface; processing, properties and industrial applications of various CMC systems; architecture, mechanical behavior at room and elevated temperatures, environmental effects and protective coatings, foreign object damage, modeling, life prediction, integration/joining.
Download or read book CASTI Metals Blue Book Welding Filler Metals written by Barry M. Patchett and published by . This book was released on 2000-01-01 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biofiber Reinforcements in Composite Materials written by Omar Faruk and published by Elsevier. This book was released on 2014-09-25 with total page 775 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural fiber-reinforced composites have the potential to replace synthetic composites, leading to less expensive, stronger and more environmentally-friendly materials. This book provides a detailed review on how a broad range of biofibers can be used as reinforcements in composites and assesses their overall performance. The book is divided into five major parts according to the origins of the different biofibers. Part I contains chapters on bast fibers, Part II; leaf fibers, Part III; seed fibers, Part IV; grass, reed and cane fibers, and finally Part V covers wood, cellulosic and other fibers including cellulosic nanofibers. Each chapter reviews a specific type of biofiber providing detailed information on the sources of each fiber, their cultivation, how to process and prepare them, and how to integrate them into composite materials. The chapters outline current and potential applications for each fiber and discuss their main strengths and weaknesses. - The book is divided into five major parts according to the origins of the different biofibers - bast, leaf, seed; grass, reed and cane fibers, and finally wood, cellulosic and other fibers including cellulosic nanofibers. - This book provides a detailed review on how a broad range of biofibers can be used as reinforcements in composites and assesses their overall performance - The chapters outline current and potential applications for each fiber and discuss their main strengths and weaknesses
Download or read book Geology and Geotechnical Properties of Laterite Gravel written by Ellis L. Krinitzsky and published by . This book was released on 1976 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Fiber Composites written by Deborah D.L. Chung and published by Butterworth-Heinemann. This book was released on 1994-09-23 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides introductory information on carbon fiber composites, including polymer-matrix, metal matrix, carbon-matrix, ceramic-matrix, and hybrid composites. Places emphasis on materials rather than mechanics.
Download or read book Structural Mechanics of Fibers Yarns and Fabrics written by Stanley Backer and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemistry of Lignocellulosics written by Taylor & Francis Group and published by CRC Press. This book was released on 2021-03-31 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the chemical properties of lignocellulosic fibers, knowledge of which is essential for innovation and sustainable development of their transformation. Thermochemical transformation of wood and other lignocellulosics is presented to highlight its volatile, liquid and solid products and their novel applications. Forest biorefinery is described to emphasize the new products from lignocellulosic constituents, both structural (cellulose, hemicelluloses and lignins) and those extraneous to cell walls-extractives. New developments in cellulose technology related to nanocellulose are discussed in relation to new applications. Industrial lignins are presented in detail, both in terms of extraction procedures from spent liquors and structural characterization of the isolated lignins. Application of lignocellulosic biopolymers in new composite materials, or in biomaterials for medicinal purposes, and in solid wood preservation, are described. The example of an industrial biorefinery installed in southwestern France more than 40 years ago is presented.
