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Book Description
LE COMPORTEMENT DE L'INTERFACE RENFORT-MATRICE ET CELUI DE LA MATRICE ADJACENTE JOUENT UN ROLE IMPORTANT SUR LES PROPRIETES MECANIQUES DES MATERIAUX COMPOSITES A MATRICE METALLIQUE. AFIN DE CARACTERISER CES COMPORTEMENTS, NOUS AVONS ETUDIE LES PROPRIETES D'INELASTICITE DE DEUX MATERIAUX: AL/12%VOL.SIC ET AL-7075/15%VOL.SIC. LE TRAVAIL EXPERIMENTAL CONCERNE PRINCIPALEMENT L'ETUDE DU FROTTEMENT INTERIEUR (F.I.) TRANSITOIRE QUI RESULTE, LORS D'UNE VARIATION DE TEMPERATURE DE L'ECHANTILLON, DE LA DIFFERENCE ENTRE LES COEFFICIENTS DE DILATATION DES PARTICULES ET DE LA MATRICE. LES CARACTERISTIQUES ESSENTIELLES DES SPECTRES REVELEES PAR LES RESULTATS EXPERIMENTAUX SONT LES SUIVANTES: (I) LES SPECTRES DE F.I. PRESENTENT, AU REFROIDISSEMENT, UN IMPORTANT ET LARGE MAXIMUM A BASSE TEMPERATURE (150K-250K). (II) LE FI AUGMENTE LORSQUE LA VITESSE DE REFROIDISSEMENT ET LA PERIODE D'OSCILLATION SONT AUGMENTEES; CES PHENOMENES SONT LIES A LA PRESENCE DES PARTICULES. (III) LE FI DEPEND DE LA LIMITE D'ELASTICITE DE LA MATRICE ET DE L'HISTOIRE THERMIQUE DU MATERIAU. NOUS PROPOSONS ALORS UN MODELE DE F.I. QUI EXPLIQUE LES PRINCIPALES PROPRIETES MISES EN EVIDENCE. CE MODELE EST FONDE SUR LE MOUVEMENT DES DISLOCATIONS, AU VOISINAGE DES INTERFACES PARTICULE-MATRICE, QUI EST SUPPOSE ETRE CONTROLE PAR: (I) L'EVOLUTION, EN COURS DE REFROIDISSEMENT, DU CHAMP DE CONTRAINTE THERMIQUE DU A LA DIFFERENCE ENTRE LES COEFFICIENTS DE DILATATION DES PARTICULES ET DE LA MATRICE, (II) LA CONTRAINTE D'ORIGINE MECANIQUE INDUITE PAR L'OSCILLATION DU PENDULE, (III) LES OBSTACLES QUI S'OPPOSENT AU MOUVEMENT DE CES DISLOCATIONS, DONT L'EFFET EST REPRESENTE PAR UNE CONTRAINTE DE FROTTEMENT. L'ENERGIE DISSIPEE PENDANT UNE PERIODE D'OSCILLATION EST ALORS CALCULEE NUMERIQUEMENT EN FONCTION DES PRINCIPAUX PARAMETRES CONTROLANT LE PHENOMENE. LES RESULTATS ISSUS DE CE CALCUL SONT EN BON ACCORD AVEC NOS RESULTATS EXPERIMENTAUX
Book Description
LE COMPORTEMENT DE L'INTERFACE RENFORT-MATRICE ET CELUI DE LA MATRICE ADJACENTE JOUENT UN ROLE IMPORTANT SUR LES PROPRIETES MECANIQUES DES MATERIAUX COMPOSITES A MATRICE METALLIQUE. AFIN DE CARACTERISER CES COMPORTEMENTS, NOUS AVONS ETUDIE LES PROPRIETES D'INELASTICITE DE DEUX MATERIAUX: AL/12%VOL.SIC ET AL-7075/15%VOL.SIC. LE TRAVAIL EXPERIMENTAL CONCERNE PRINCIPALEMENT L'ETUDE DU FROTTEMENT INTERIEUR (F.I.) TRANSITOIRE QUI RESULTE, LORS D'UNE VARIATION DE TEMPERATURE DE L'ECHANTILLON, DE LA DIFFERENCE ENTRE LES COEFFICIENTS DE DILATATION DES PARTICULES ET DE LA MATRICE. LES CARACTERISTIQUES ESSENTIELLES DES SPECTRES REVELEES PAR LES RESULTATS EXPERIMENTAUX SONT LES SUIVANTES: (I) LES SPECTRES DE F.I. PRESENTENT, AU REFROIDISSEMENT, UN IMPORTANT ET LARGE MAXIMUM A BASSE TEMPERATURE (150K-250K). (II) LE FI AUGMENTE LORSQUE LA VITESSE DE REFROIDISSEMENT ET LA PERIODE D'OSCILLATION SONT AUGMENTEES; CES PHENOMENES SONT LIES A LA PRESENCE DES PARTICULES. (III) LE FI DEPEND DE LA LIMITE D'ELASTICITE DE LA MATRICE ET DE L'HISTOIRE THERMIQUE DU MATERIAU. NOUS PROPOSONS ALORS UN MODELE DE F.I. QUI EXPLIQUE LES PRINCIPALES PROPRIETES MISES EN EVIDENCE. CE MODELE EST FONDE SUR LE MOUVEMENT DES DISLOCATIONS, AU VOISINAGE DES INTERFACES PARTICULE-MATRICE, QUI EST SUPPOSE ETRE CONTROLE PAR: (I) L'EVOLUTION, EN COURS DE REFROIDISSEMENT, DU CHAMP DE CONTRAINTE THERMIQUE DU A LA DIFFERENCE ENTRE LES COEFFICIENTS DE DILATATION DES PARTICULES ET DE LA MATRICE, (II) LA CONTRAINTE D'ORIGINE MECANIQUE INDUITE PAR L'OSCILLATION DU PENDULE, (III) LES OBSTACLES QUI S'OPPOSENT AU MOUVEMENT DE CES DISLOCATIONS, DONT L'EFFET EST REPRESENTE PAR UNE CONTRAINTE DE FROTTEMENT. L'ENERGIE DISSIPEE PENDANT UNE PERIODE D'OSCILLATION EST ALORS CALCULEE NUMERIQUEMENT EN FONCTION DES PRINCIPAUX PARAMETRES CONTROLANT LE PHENOMENE. LES RESULTATS ISSUS DE CE CALCUL SONT EN BON ACCORD AVEC NOS RESULTATS EXPERIMENTAUX
Author: Don Montague Publisher: Taylor & Francis ISBN: 9780419199106 Category : Architecture Languages : en Pages : 472
Book Description
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.
Author: Bo Song Publisher: Springer ISBN: 3319224522 Category : Technology & Engineering Languages : en Pages : 265
Book Description
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 Description
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.
Author: Linda Strande Publisher: IWA Publishing ISBN: 1780404735 Category : Technology & Engineering Languages : en Pages : 428
Book Description
It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Author: Jean Salencon Publisher: Springer Science & Business Media ISBN: 3642565425 Category : Science Languages : en Pages : 794
Book Description
Outstanding approach to continuum mechanics. Its high mathematical level of teaching together with abstracts, summaries, boxes of essential formulae and numerous exercises with solutions, makes this handbook one of most complete books in the area. Students, lecturers, and practitioners will find this handbook a rich source for their studies or daily work.
Author: Catherine Girard
Author: Catherine Girard
Author: 
Author: Don Montague
Author: Bo Song
Author: Leslie Rainer
Author: Austin McDowell Patterson
Author: Linda Strande
Author: Goddard Space Flight Center. Office of Public Affairs
Author: Zay Jeffries
Author: Jean Salencon