Download or read book Probabilit de rupture et fiabilit des composites matrice c ramique written by Nathalie Lissart and published by . This book was released on 1994 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Une approche statistique probabiliste du comportement mécanique des composites sic/c/sic, fondée sur les phénomènes stochastiques a l'origine de la rupture des fibres et de la matrice, a été développe. L'analyse a été effectuée sur des mini composites (fil brut sur lequel la matrice a été déposée) en raison de leur rôle prépondérant dans l'endommagement et la rupture de la structure composite. Dans un premier temps on a évalue les valeurs des caractéristiques statistiques de la rupture des fibres et de la matrice, a partir des essais de traction sur fibres unitaires, fils bruts et mini composites en fonction de divers paramètres tels que les populations de défauts, les variations de diamètre des fibres etc. Puis l'analyse du comportement mécanique en traction des fils bruts constitues de fibres sic, a mis en évidence un paramètre important, le pourcentage de ruptures préliminaires qui constitue le critère de rupture du fil brut. Enfin on a décrit la rupture du mini composite en les assimilant à des fils bruts soumis à un champ de contrainte spécifique induit par la fissuration intense de la matrice. Ce modèle a permis de calculer de manière satisfaisante les courbes de comportement. Par ailleurs, il a permis d'anticiper l'influence des propriétés des fibres et de la matrice et aussi de leur dispersion statistique sur le comportement mécanique et la rupture des composites

Download or read book M canique de la rupture des composites matrice c ramique written by M. Boussuge and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fracture Mechanics of Ceramics written by R.C. Bradt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: Second part of the proceedings of the Sixth International Symposium held in Karlsruhe, Germany, July 18-20, 1995.

Download or read book Computational Mesomechanics of Composites written by Leon L. Mishnaevsky, Jr and published by John Wiley & Sons. This book was released on 2007-08-20 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical properties of composite materials can be improved by tailoring their microstructures. Optimal microstructures of composites, which ensure desired properties of composite materials, can be determined in computational experiments. The subject of this book is the computational analysis of interrelations between mechanical properties (e.g., strength, damage resistance stiffness) and microstructures of composites. The methods of mesomechanics of composites are reviewed, and applied to the modelling of the mechanical behaviour of different groups of composites. Individual chapters are devoted to the computational analysis of the microstructure- mechanical properties relationships of particle reinforced composites, functionally graded and particle clusters reinforced composites, interpenetrating phase and unidirectional fiber reinforced composites, and machining tools materials.

Download or read book Ceramic Matrix Composites written by J. Paulo Davim and published by Walter de Gruyter GmbH & Co KG. This book was released on 2016-06-20 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite materials are engineered from two or more constituents with significantly altered physical or chemical properties within the finished structure. Due to their special mechanical and physical properties they have the potential to replace conventional materials. This book, written by experts from all over the world, presents fundamentals and recent advances on ceramic matrix composites.

Download or read book Approches statistiques probabilistes du comportement m canique des composites matrice c ramique written by Vincent Calard and published by . This book was released on 1998 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: DES APPROCHES STATISTIQUES-PROBABILITES DU COMPORTEMENT MECANIQUE DES COMPOSITES A MATRICE CERAMIQUE, FONDEES SUR LA DESCRIPTION DES PHENOMENES STOCHASTIQUES A L'ORIGINE DE LA FRAGMENTATION MATRICIELLE ET DE LA RUPTURE ULTIME, ONT ETE DEVELOPPEES. ELLES ONT ETE APPLIQUEES A DES COMPOSITES UNIDIRECTIONNELS ET TISSES DE TYPE SIC/SIC. ELLES ONT PERMIS DE CALCULER LE COMPORTEMENT MECANIQUE ET LA RUPTURE EN TRACTION ET EN FLEXION. L'APPROCHE DE LA FRAGMENTATION MATRICIELLE REPOSE SUR L'ANALYSE DES POPULATIONS DE DEFAUTS QUI PROVOQUENT CETTE FRAGMENTATION. DANS LE CAS DES COMPOSITES UNIDIRECTIONNELS ETUDIES, UNE SEULE POPULATION EST SUFFISANTE POUR CALCULER LE COMPORTEMENT. POUR LES COMPOSITES TISSES ETUDIES, TROIS POPULATIONS DE DEFAUTS CARACTERISENT LE PROCESSUS DE FISSURATION. EN CE QUI CONCERNE LA RUPTURE, UNE CLASSIFICATION, FONDEE SUR LES EFFETS DE VOLUMES ET LES RUPTURES SUCCESSIVES D'EPROUVETTES EN TRACTION, PERMET DE DEFINIR CONVENABLEMENT LE CHOIX DU CRITERE PROBABILISTE DE RUPTURE (WEIBULL, ERGODIQUE ). AINSI LE CARACTERE ERGODIQUE DE LA RUPTURE D'UN COMPOSITE TISSE SIC/SIC A ETE MIS EN EVIDENCE ET VERIFIE SUR DES ESSAIS DE FLEXION 3 POINTS ET 4 POINTS.

Download or read book Fracture Mechanics of Ceramics written by Richard Carl Bradt and published by . This book was released on 1974 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Probabilit de rupture et fiabilit des composites matrice c ramique written by and published by . This book was released on 1994 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal de physique written by and published by . This book was released on 2002 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comprehensive Nuclear Materials written by Todd R Allen and published by Elsevier. This book was released on 2011-05-12 with total page 3552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Nuclear Materials, Five Volume Set discusses the major classes of materials suitable for usage in nuclear fission, fusion reactors and high power accelerators, and for diverse functions in fuels, cladding, moderator and control materials, structural, functional, and waste materials. The work addresses the full panorama of contemporary international research in nuclear materials, from Actinides to Zirconium alloys, from the worlds' leading scientists and engineers. Critically reviews the major classes and functions of materials, supporting the selection, assessment, validation and engineering of materials in extreme nuclear environment Fully integrated with F-elements.net, a proprietary database containing useful cross-referenced property data on the lanthanides and actinides Details contemporary developments in numerical simulation, modelling, experimentation, and computational analysis, for effective implementation in labs and plants

Download or read book Composite Material Technology 1992 written by David Hui and published by . This book was released on 1992 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acoustic Emission and Durability of Composite Materials written by Nathalie Godin and published by John Wiley & Sons. This book was released on 2018-02-15 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, two kinds of analysis based on acoustic emission recorded during mechanical tests are investigated. In the first, individual, analysis, acoustic signature of each damage mechanism is characterized. So with a clustering method, AE signals that have similar shapes or similar features can be group together into a cluster. Afterwards, each cluster can be linked with a main damage. The second analysis is based on a global AE analysis, on the investigation of liberated energy, with a view to identify a critical point. So beyond this characteristic point, the criticality can be modeled with a power-law in order to evaluate time to failure.

Download or read book Fracture Mechanics of Ceramics written by M. Sakai and published by Springer Science & Business Media. This book was released on 1992 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volumes 9 and 10 (see following entry) comprise the proceedings of an international symposium on the fracture mechanics of ceramic materials held in Nagoya, Japan, July 1991. Scientists address many of the theoretical and practical issues of brittle fractures and explore recent developments in monol

Download or read book Silicates industriels written by and published by . This book was released on 1990 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book PROBAMAT 21st Century Probabilities and Materials written by G.N. Frantziskonis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are numerous technological materials - such as metals, polymers, ceramics, concrete, and many others - that vary in properties and serviceability. However, the almost universal common theme to most real materials is that their properties depend on the scale at which the analysis or observation takes place and at each scale "probabilities" play an important role. Here the word "probabilities" is used in a wider than the classical sense. In order to increase the efficiency and serviceability of these materials, researchers from NATO, CP and other countries were brought together to exchange knowledge and develop avenues for progress and applications in the st 21 century. The workshop began by reviewing progress in the subject area over the past few years and by identifying key questions that remain open. One point was how to observe/measure material properties at different scales and whether a probabilistic approach, at each scale, was always applicable and advantageous. The wide range of materials, from wood to advanced metals and from concrete to complex advanced composites, and the diversity of applications, e.g. fatigue, fracture, deformation, etc., were recognized as "obstacles" in identifying a "universal" approach.

Download or read book ETUDE DES MECANISMES D ENDOMMAGEMENT ET DE RUPTURE DES MATERIAUX COMPOSITES A FIBRES ET A MATRICE CERAMIQUES written by GILLES.. NAVARRE and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: LES TRAVAUX DE RECHERCHE ONT CONSISTE EN L'ETUDE DES MECANISMES D'ENDOMMAGEMENT ET DE RUPTURE DES MATERIAUX COMPOSITES A FIBRE ET A MATRICE CERAMIQUE. CES MATERIAUX, ELABORES PAR LA SOCIETE EUROPEENNE DE PROPULSION, SONT CONSTITUES D'UNE MATRICE DE CARBURE DE SILICIUM ET D'UNE STRUCTURE FIBREUSE, SOIT DE CARBONE (COMPOSITE C/SIC), SOIT DE CARBURE DE SILICIUM (COMPOSITE SIC (NICALON)-SIC). SUR LE PLAN MACROSCOPIQUE, L'ETUDE DU COMPORTEMENT A LA RUPTURE DES DEUX MATERIAUX S'APPUIE LARGEMENT SUR LA TECHNIQUE DES COURBES DE RESISTANCE A LA PROPAGATION DE FISSURE (COURBE R). L'ETUDE EXPERIMENTALE PERMET, D'UNE PART LA CARACTERISATION THERMOMECANIQUE DU COMPORTEMENT DE CES MATERIAUX SOUS DIVERSES CONDITIONS DE TRAITEMENTS CHIMIQUES ET THERMIQUES. D'AUTRE PART, AU VU DES RESULTATS PRECEDENTS, LA VALIDITE DES COURBES R EST DISCUTEE. CETTE ANALYSE EST COMPLETEE PAR UNE CARACTERISATION FINE DE LA FISSURE PAR RADIOGRAPHIE X ET MARQUAGE THERMIQUE. DANS LE COMPOSITE SIC/SIC, LA ZONE ENDOMMAGEE, CONSTITUEE PRINCIPALEMENT D'UNE FISSURE MATRICIELLE PONTEE PAR DES FIBRES, EST LE SIEGE DE L'ABSORPTION D'ENERGIE PAR FROTTEMENT FIBRES-MATRICE, ET LE PHENOMENE D'EXTRACTION DE FIBRES EST A L'ORIGINE DU COMPORTEMENT NON FRAGILE. LA MODELISATION THEORIQUE DE CE PHENOMENE CONDUIT A LA DETERMINATION DES DISTRIBUTIONS DE LONGUEURS EXTRAITES QUI, RELIEES A L'ANALYSE MORPHOLOGIQUE DES FACIES DE RUPTURE, PERMET DE CONCLURE SUR LE TRANSFERT DE CHARGE FIBRE-MATRICE. UNE EBAUCHE DU CALCUL DES DIFFERENTS TERMES ENERGETIQUES CONFIRME LA PART IMPORTANTE DU MECANISME D'EXTRACTION DE FIBRES. LES RESULTATS THEORIQUES SONT COMPARES A L'ETUDE EXPERIMENTALE AFIN DE PRECISER LE COMPORTEMENT THERMOMECANIQUE DES MATERIAUX ET LES PARAMETRES MICROMECANIQUES QUI INTERVIENNENT

Download or read book Congr s International Sur Le Comportement M canique Et Physique Des Mat riaux Sous Sollicitations Dynamiques written by and published by . This book was released on 1988 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: