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Mesure Et Prevision De Levolution Des Endommagements Dans Les Composites Stratifies
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Book Synopsis Mesure et prévision de l'évolution des endommagements dans les composites stratifiés by : Christophe Bois
Download or read book Mesure et prévision de l'évolution des endommagements dans les composites stratifiés written by Christophe Bois and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La mesure de l'impédance d'un transducteur piézoélectrique est utilisée pour caractériser un délaminage. Pour cela un modèle électromécanique, basé sur la théorie des stratifiés, est développé pour des structures poutres présentant un délaminage. Ce modèle est validé par des résultats expérimentaux et il est ensuite utilisé pour caractériser le délaminage par calcul inverse.La mesure d'impédance est également utilisée pour déterminer un niveau d'endommagement diffus. En particulier, l'influence de ce type d'endommagement sur les fréquences de résonance et l'amortissement est étudiée.Une méthode ultrasonore basée sur la propagation d'ondes de Lamb est employée pour détecter les macro-endommagements (fissure complète de stratifié et délaminage). Une confrontation entre des simulations éléments finis et des résultats expérimentaux nous ont permis de mieux comprendre les phénomènes d'interaction entre les ondes et le défaut.
Book Synopsis Design and Modeling of Mechanical Systems - II by : Mnaouar Chouchane
Download or read book Design and Modeling of Mechanical Systems - II written by Mnaouar Chouchane and published by Springer. This book was released on 2015-03-24 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a collection of original peer-reviewed contributions presented at the 6th International Congress on Design and Modeling of Mechanical Systems (CMSM’2015), held in Hammamet, Tunisia, from the 23rd to the 25th of March 2015. It reports on both recent research findings and innovative industrial applications in the fields of mechatronics and robotics, dynamics of mechanical systems, fluid structure interaction and vibroacoustics, modeling and analysis of materials and structures, and design and manufacturing of mechanical systems. Since its first edition in 2005, the CMSM Congress has been held every two years with the aim of bringing together specialists from universities and industry to present the state-of-the-art in research and applications, discuss the most recent findings and exchange and develop expertise in the field of design and modeling of mechanical systems. The CMSM Congress is jointly organized by three Tunisian research laboratories: the Mechanical Engineering Laboratory of the National Engineering School of Monastir; the Mechanical Laboratory of Sousse, part of the National Engineering School of Sousse; and the Mechanical, Modeling and Manufacturing Laboratory at the National Engineering School of Sfax.
Book Synopsis ETUDE DE LA PREVISION DE LA RESISTANCE A LA RUPTURE ET DES MECANISMES D'ENDOMMAGEMENT EN TRACTION MONOTONE ET CYCLIQUE DES STRATIFIES COMPOSITES NON TISSES ET TISSES CONTENANT DES TROUS CIRCULAIRES by : JIAYU.. XIAO
Download or read book ETUDE DE LA PREVISION DE LA RESISTANCE A LA RUPTURE ET DES MECANISMES D'ENDOMMAGEMENT EN TRACTION MONOTONE ET CYCLIQUE DES STRATIFIES COMPOSITES NON TISSES ET TISSES CONTENANT DES TROUS CIRCULAIRES written by JIAYU.. XIAO and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE A UTILISE LES CRITERES DE WHITNEY ET NUISMER, DE PIPES, ET LES MODELES DE TAN ET DE DEGRADATION PROGRESSIVE PAR CALCUL AUX ELEMENTS FINIS (MDPC) POUR ETUDIER LA RESISTANCE ET LE MECANISME D'ENDOMMAGEMENT DE PLUSIEURS TYPES DE PLAQUES STRATIFIEES PORTANT DES TROUS CIRCULAIRES EN TRACTION MONOTONE. LE COMPORTEMENT DE FATIGUE EN TRACTION DE TROIS STRATIFIES TISSES A EGALEMENT ETE ABORDE. L'ATTENTION A ETE PRINCIPALEMENT CONCENTREE SUR LA CHUTE DE RIGIDITE SECANTE. L'APPARITION ET L'EVOLUTION DES ENDOMMAGEMENTS AU FUR ET A MESURE DU NOMBRE DE CYCLES. LES TRACTIONS MONOTONE ET CYCLIQUE, RADIOGRAPHIE, EMISSION ACOUSTIQUE ET MICROSCOPIE ONT ETE ADOPTES POUR VERIFIER LES RESULTATS PREVUS ET POUR AVOIR LE DETAIL DES MECANISMES DE L'ENDOMMAGEMENT AU SEIN DES MATERIAUX COMPOSITES NON TISSES ET TISSES. LES RESULTATS DANS LE CAS MONOTONE MONTRENT: LES CRITERES UTILISES SONT ASSEZ PRECIS ET SIMPLES A UTILISER; LES MODELES DE TAN MODIFIES DANS CETTE THESE SONT PREFERABLES POUR LES STRATIFIES TISSES ET ORTHOTROPES ET CES MODELES PEUVENT DONNER DES INFORMATIONS SUR L'ENDOMMAGEMENT; LE MDPC EST PREFERABLE POUR SAVOIR LE SUIVI D'ENDOMMAGEMENT; LE MECANISME DE L'ENDOMMAGEMENT DANS LE CAS TISSE EST PLUS COMPLEXE QUE CELUI DANS LE CAS NON TISSE. LES RESULTATS DANS LE CAS CYCLIQUE MONTRENT: LA COURBE RATIONALISEE DE LA CHUTE DE RIGIDITE PEUT SE DIVISER EN TROIS STADES; L'APPARITION ET LA PROPAGATION DES ENDOMMAGEMENTS OBSERVABLES SE PRODUISENT PENDANT LE TROISIEME STADE ET CES ENDOMMAGEMENTS SONT ORIENTES DE PREFERENCE SUIVANT LES PLIS A 90; LA PROPAGATION PEUT AUSSI SE DIVISER EN TROIS STADES, DONT UN STADE STABLE, UN STADE INSTABLE ET UN STADE BRUTAL; LA TENUE EN FATIGUE DES MATERIAUX EST PRINCIPALEMENT DOMINEE PAR LE STADE STABLE PENDANT LA PROPAGATION; LA VITESSE DE L'EVOLUTION DES ENDOMMAGEMENTS EST INFLUENCEE PAR LES SEQUENCES D'EMPILEMENT; IL EXISTE UN SEUIL DE DISTANCE SUR LE LIGAMENT ET UN SEUIL DE DUREE DE VIE AU-DESSUS DESQUELS LA RUPTURE CATASTROPHIQUE SE PRODUIT
Book Synopsis Simulation des endommagements et de la rupture dans les composites stratifies by : Laurent Gornet
Download or read book Simulation des endommagements et de la rupture dans les composites stratifies written by Laurent Gornet and published by . This book was released on 1996 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'objectif de ce travail mené en collaboration avec le cnes toulouse est de proposer et de mettre en uvre dans le cadre des éléments finis classiques des stratégies fiables permettant la prévision de l'endommagement jusqu'a rupture des structures composites stratifiées carbone/époxy. Le composite est décrit dans nos travaux à une échelle intermédiaire appelée meso, comme un empilement de monocouches homogènes dans l'épaisseur et d'interfaces interlaminaires. Les mécanismes de dégradation sont homogènes dans l'épaisseur de chacune des couches. Ces dégradations des couches sont dues à des ruptures de fibres ainsi qu’à une micro fissuration de la matrice parallèlement à la direction des fibres. Tous ces phénomènes d'endommagement sont pris en compte au travers d'un modèle de comportement tridimensionnel elasto-plastique endommageable. Les délaminages sont modélises par une loi de comportement de l'interface élastique endommageable. L'un des apports de cette étude réside dans la réalisation du code éléments finis endo-strat-ef base sur le code e.f. Castem 2000 développe par le c.e.a.. Notre logiciel permet de conduire des calculs non linéaires intégrant les différents mécanismes de dégradation des structures stratifiées sur des géométries complexes et pour différents types de cas de chargement. La description des phénomènes de dégradation à l'échelle meso associée a des lois d'évolution de l'endommagement avec effet de retard permet de réaliser des simulations objectives vis-à-vis de la discrétisation e.f.. Des simulations sont menées sur des éprouvettes d.c.b., e.n.f. Et m.m.f.. Elles permettent d'identifier le modèle d'interface pour le matériau m55j/m18 a partir d'essais réalises a l'aérospatiale suresnes. L'étude de plaques stratifiées soumises a un état de tension met en évidence l'endommagement des couches ainsi que la propagation du délaminage jusqu'a la phase ultime de la rupture.
Book Synopsis Mechanical Identification of Composites by : A. Vautrin
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:
Book Synopsis Frozen Food Science and Technology by : Judith A. Evans
Download or read book Frozen Food Science and Technology written by Judith A. Evans and published by John Wiley & Sons. This book was released on 2009-01-21 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive source of information on freezing and frozen storage of food. Initial chapters describe the freezing process and provide a fundamental understanding of the thermal and physical processes that occur during freezing. Experts in each stage of the frozen cold chain provide, within dedicated chapters, guidelines and advice on how to freeze food and maintain its quality during storage, transport, retail display and in the home. Individual chapters deal with specific aspects of freezing relevant to the main food commodities: meat, fish, fruit and vegetables. Legislation and new freezing processes are also covered. Frozen Food Science and Technology offers in-depth knowledge of current and emerging refrigeration technologies along the entire frozen food chain, enabling readers to optimise the quality of frozen food products. It is aimed at food scientists, technologists and engineers within the frozen food industry; frozen food retailers; and researchers and students of food science and technology.
Book Synopsis Fatigue Life Prediction of Composites and Composite Structures by : Anastasios P. Vassilopoulos
Download or read book Fatigue Life Prediction of Composites and Composite Structures written by Anastasios P. Vassilopoulos and published by Woodhead Publishing. This book was released on 2019-10-08 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue Life Prediction of Composites and Composite Structures, Second Edition, is a comprehensive review of fatigue damage and fatigue life modeling and prediction methodologies for composites and their use in practice. In this new edition, existing chapters are fully updated, while new chapters are introduced to cover the most recent developments in the field. The use of composites is growing in structural applications in many industries, including aerospace, marine, wind turbine and civil engineering. However, there are uncertainties about their long-term performance, including performance issues relating to cyclic fatigue loading that hinder the adoption of a commonly accepted credible fatigue design methodology for the life prediction of composite engineering structures. With its distinguished editor and international team of contributors, this book is a standard reference for industry professionals and researchers alike. Examines past, present and future trends associated with the fatigue life prediction of composite materials and structures Assesses novel computational methods for fatigue life modeling and prediction of composite materials under constant amplitude loading Covers a wide range of techniques for predicting fatigue, including their theoretical background and practical applications Addresses new topics and covers contemporary research developments in the field
Book Synopsis Dislocations, Mesoscale Simulations and Plastic Flow by : Ladislas Kubin
Download or read book Dislocations, Mesoscale Simulations and Plastic Flow written by Ladislas Kubin and published by OUP Oxford. This book was released on 2013-04-18 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past twenty years, new experimental approaches, improved models and progress in simulation techniques brought new insights into long-standing issues concerning dislocation-based plasticity in crystalline materials. During this period, three-dimensional dislocation dynamics simulations appeared and reached maturity. Their objectives are to unravel the relation between individual and collective dislocation processes at the mesoscale, to establish connections with atom-scale studies of dislocation core properties and to bridge, in combination with modelling, the gap between defect properties and phenomenological continuum models for plastic flow. Dislocation dynamics simulations are becoming accessible to a wide range of users. This book presents to students and researchers in materials science and mechanical engineering a comprehensive coverage of the physical body of knowledge on which they are based. It includes classical studies, which are too often ignored, recent experimental and theoretical advances, as well as a discussion of selected applications on various topics.
Book Synopsis The Microstructure of Superalloys by : Madeleine Durand-Charre
Download or read book The Microstructure of Superalloys written by Madeleine Durand-Charre and published by Routledge. This book was released on 2017-11-22 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents all the main aspects of the microstructure of nickel-base superalloys, and includes micrographs chosen from among a large range of commercial and academic alloys, from the as-cast product to in-situ components, worn from in-service use. Including more than 100 illustrations, the text explains all the transformation mechanisms involved in the origination (creation) of microstructures during solidification or heat treatments (crystallization paths, segregation, crystal orientation, precipitation, TCP, coarsening and rafting, etc.). It includes up-to-date information and data such as phase diagrams, crystallographic structures, and relationships with functional properties. Nearly 300 references provide a key to further investigation.
Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Book Synopsis Fatigue of Composite Materials by : R Talreja
Download or read book Fatigue of Composite Materials written by R Talreja and published by Technomic Publishing Company. This book was released on 1990 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water & Heritage by : Willem Willems
Download or read book Water & Heritage written by Willem Willems and published by . This book was released on 2017-01-15 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is vital for life, and its availability has been a concern for mankind throughout the ages. Its presence has always been ascertained in a variety of ways and the development of human society everywhere is connected with various forms of water management. Man also needed to manage water to find protection from its dangers and the need for that is increasing. In the coming decades, the impact of climate change is expected to intensify floods and droughts, affect groundwater resources, raise sea levels, increase pollution and enhance the frequency and magnitude of disasters. Societies around the world are challenged to adapt to these threats to ensure water security, economic prosperity and environmental and cultural sustainability. This book deals with the heritage of water management and the use that was made of water, as well as the impact of water management on heritage. An example of the former may be an ancient irrigation system in the Filipines or in the Middle East that still functions today, while the latter may reflect the importance of maintaining groundwater levels for the preservation of organic remains on archaeological sites or of wooden piles underneath standing buildings. In either case the papers in this book reflect the dynamic nature of water, and hence the equally dynamic relation between water management and heritage. This publication follows up on a Heritage and Water conference in Amsterdam, the first of its kind. Its main purpose is to credibly present the importance and value of heritage and historical experience for water and sustainable development, and vice versa, present the importance of water management for the protection of heritage. It presents evolving insights and concepts about Water and about Heritage from a variety of disciplines, policy and public perspectives illustrated with cases studies and aims to connect decision makers with experts such as engineers, archaeologists, historians, geographers, ecologist and landscape architects
Book Synopsis Dictionary of Building and Civil Engineering by : Don Montague
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.
Book Synopsis Dynamic Behavior of Materials, Volume 1 by : Bo Song
Download or read book Dynamic Behavior of Materials, Volume 1 written by Bo Song and published by Springer. This book was released on 2015-10-23 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Behavior of Materials, Volume 1 represents the first of nine volumes of technical papers presented at the Society for Experimental Mechanics SEM 15th International Congress & Exposition on Experimental and Applied Mechanics, held at Costa Mesa, California, June 8-11, 2015. The full set of proceedings also includes volumes on: Challenges in Mechanics of Time Dependent Materials, Advancement of Optical Methods in Experimental Mechanics, Experimental and Applied Mechanics 16th International Symposium on MEMS and Nanotechnology, 5th International Symposium on the Mechanics of Biological Systems and Materials, International Symposium on the Mechanics of Composite and Multi-functional Materials, Fracture, Fatigue, Failure and Damage Evolution; and Residual Stress, Thermomechanics & Infrared Imaging, Hybrid Techniques and Inverse Problems.
Book Synopsis Symmetric Galerkin Boundary Element Method by : Alok Sutradhar
Download or read book Symmetric Galerkin Boundary Element Method written by Alok Sutradhar and published by Springer Science & Business Media. This book was released on 2008-09-26 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symmetric Galerkin Boundary Element Method presents an introduction as well as recent developments of this accurate, powerful, and versatile method. The formulation possesses the attractive feature of producing a symmetric coefficient matrix. In addition, the Galerkin approximation allows standard continuous elements to be used for evaluation of hypersingular integrals. FEATURES • Written in a form suitable for a graduate level textbook as well as a self-learning tutorial in the field. • Covers applications in two-dimensional and three-dimensional problems of potential theory and elasticity. Additional basic topics involve axisymmetry, multi-zone and interface formulations. More advanced topics include fluid flow (wave breaking over a sloping beach), non-homogeneous media, functionally graded materials (FGMs), anisotropic elasticity, error estimation, adaptivity, and fracture mechanics. • Presents integral equations as a basis for the formulation of general symmetric Galerkin boundary element methods and their corresponding numerical implementation. • Designed to convey effective unified procedures for the treatment of singular and hypersingular integrals that naturally arise in the method. Symbolic codes using Maple® for singular-type integrations are provided and discussed in detail. • The user-friendly adaptive computer code BEAN (Boundary Element ANalysis), fully written in Matlab®, is available as a companion to the text. The complete source code, including the graphical user-interface (GUI), can be downloaded from the web site http://www.ghpaulino.com/SGBEM_book. The source code can be used as the basis for building new applications, and should also function as an effective teaching tool. To facilitate the use of BEAN, a video tutorial and a library of practical examples are provided.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1828 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
