Download or read book Mod lisation tude math matique et num rique du traitement de surface par laser written by Jean-Marc Talbot and published by . This book was released on 1984 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 3rd International Conference on Lasers in Manufacturing written by Alain Quenzer and published by . This book was released on 1986 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MODELISATION THERMIQUE DU TRAITEMENT DE SURFACE PAR FAISCEAU LASER APPLICATION AU TRAITEMENT THERMIQUE SUPERFICIEL written by SUWARDI. and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: MODELISATION NUMERIQUE DU TRAITEMENT THERMIQUE SUPERFICIEL D'UNE PIECE EN ACIER OU EN FONTE PAR FAISCEAU LASER. DANS UNE PREMIERE APPROCHE LE TRAITEMENT EST EFFECTUE SUR UNE PIECE FIXE DE GEOMETRIE SIMPLE. L'OBJECTIF EST DE VALIDER LE CALCUL ET DE METTRE EN EVIDENCE LES PARAMETRES LES PLUS SENSIBLES. NOUS ABORDONS ENSUITE LES TRAITEMENTS AU DEFILE D'ABORD DANS LE CAS D'UNE GEOMETRIE SIMPLE PUIS ENSUITE DANS LE CAS D'UNE PIECE DE FORME COMPLEXE. L'APPROCHE DU MODELE PAR ELEMENTS FINIS EST VALIDEE NUMERIQUEMENT OU EXPERIMENTALEMENT, LES PARAMETRES PERTINENTS SONT DECRITS. UN EFFORT PARTICULIER A ETE APPORTE POUR L'OBTENTION DE DONNEES FIABLES PARTICULIEREMENT EN CE QUI CONCERNE L'ABSORPTIVITE (ROLE D'UN REVETEMENT DE SURFACE). LE MODELE PREND EN COMPTE UNE DISTRIBUTION D'ENERGIE QUELCONQUE DANS LE FAISCEAU LASER
Download or read book Discrete and Continuous Dynamical Systems written by and published by . This book was released on 1997 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation num rique des traitements de surface par laser written by Marco Picasso and published by . This book was released on 1992 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1st International Laser M2P Conference written by R. Bacis and published by . This book was released on 1988 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Control of Partial Differential Equations written by Alfredo Bermudez and published by Springer. This book was released on 1989 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conference on Optimal Control of Systems
Download or read book Investigation exp rimentale et mod lisation num rique du proc d de traitement thermique superficiel par laser avec diff rents mod les de balayage written by Baha Tarchoun and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: « Le traitement thermique de surface par laser représente une des solutions les plus innovantes dans l’industrie moderne grâce à ses nombreux avantages. Les recherches concernant ce procédé n’ont pas encore révélé toutes ses spécificités et ses subtilités. Cela limite fortement les possibilités d’exploiter adéquatement ses avantages et d’optimiser ses performances.L’objectif de ce projet consiste à investiguer aussi bien expérimentalement que numériquement le procédé de traitement thermique de surface par laser dans le but de développer une stratégie d’optimisation prédictive de ses performances dans le cas de l’utilisation de différents modèles de balayage de la source laser. Cette stratégie permet de conduire à des modèles prédictifs simples, précis et robustes des performances du procédé. Pour atteindre cet objectif, une méthodologie en trois phases est adoptée. La première consiste à conduire une investigation expérimentale pour analyser les effets des modèles de balayage considérés sur les caractéristiques du profile de dureté. L’expérimentation est conduite selon d es plans d’expériences structurés appliqués à des plaques en acier AISI 4340 en utilisant une source laser Nd:Yag de 3 kW. L’analyse des résultats expérimentaux est réalisée à l’aide de techniques statistiques éprouvées. La deuxième phase consiste à développer et à valider expérimentalement un modèle numérique 3D en utilisant la méthode des éléments finis afin de réduire les coûts de l’expérimentation et simuler le comportement du procédé sous des conditions difficiles à réaliser expérimentalement. Les résultats des simulations ont révélé que les modèles 3D permettent de fournir une prédiction cohérente ainsi qu’une analyse qualitative et quantitative du comportement du procédé. Cette analyse a permis d'identifier les variables et les conditions les plus pertinentes à considérer dans une modélisation prédictive. Finalement, la troisième phase consiste à exploiter les avantages qu’offrent les réseaux de neurones artificiels dans le développement de la stratégie d’optimisation prédictive proposée. Des modèles directs et inverses du procédé ont constitués les ingrédients de base de cette stratégie. Une base de données intégrant les données provenant de l’expérimentation et les données issues des simulations numériques est utilisée pour l’apprentissage et pour la validation des modèles. De nombreux critères statistiques sont utilisés pour évaluer les performances des modèles aussi bien en termes xiv de précision que de robustesse. Les résultats obtenus montrent que cette stratégie conduit à des modèles prédictifs précis et robustes. -- Mot(s) clé(s) en français : Traitement thermique de surface par laser, Acier AISI 4340, Analyse thermique, Modèles de balayage, Profil de dureté, Planification d’expériences, ANOVA, Modélisation numérique 3D, Modèle prédictif, Réseaux de neurones artificiels. »--
Download or read book MODELISATION THERMIQUE METALLURGIQUE ET MECANIQUE DU TRAITEMENT THERMIQUE SUPERFICIEL PAR FAISCEAU LASER written by MBAREK.. BOUFOUSSI and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE ETUDE PORTE SUR LA MODELISATION DU TRAITEMENT THERMIQUE SUPERFICIEL PAR FAISCEAU LASER. AU COURS DE SON TRAITEMENT LE MATERIAU SUBIT DES EVOLUTIONS DE TEMPERATURE ET DE MICROSTRUCTURE QUI GENERENT DES DEFORMATIONS ET DES CONTRAINTES INTERNES DANS LA PIECE TRAITEE. ELLE COMPORTE D'UNE PART UNE ETUDE DE L'INFLUENCE DES PARAMETRES DU PROCEDE SUR LES PROFILS DES CONTRAINTES RESIDUELLES. LE CALCUL THERMIQUE-METALLURGIQUE-MECANIQUE EST APPLIQUE AU TRAITEMENT THERMIQUE SUPERFICIEL DE PLAQUES EN ACIER XC42 ET 55C1. LA GENESE DES CONTRAINTES INTERNES ET DES DEFORMATIONS PERMANENTES AU COURS DU TRAITEMENT A ETE ANALYSEE. LE CALCUL PERMET DE PREVOIR DE FACON SATISFAISANTE LA GEOMETRIE, LES DISTRIBUTIONS DE DURETE ET DE CONTRAINTES RESIDUELLES DE LA ZONE AFFECTEE THERMIQUEMENT. L'ETUDE DE L'INFLUENCE DES PARAMETRES DU PROCEDE SUR LES PROFILS DE CONTRAINTES RESIDUELLES MONTRE QUE LES VARIATIONS ADMISSIBLES DE CES PARAMETRES, CONDUISENT A DES CONTRAINTES RESIDUELLES EN SURFACE QUI RESTENT RELATIVEMENT FAIBLES PAR RAPPORT A LA LIMITE D'ELASTICITE DU MATERIAU. CE FAIT EST ATTRIBUE PRINCIPALEMENT AUX VITESSES DE REFROIDISSEMENT MISES EN JEU DANS LE TRAITEMENT LASER QUI SONT LIMITEES PAR LA CONDUCTION DANS LE MATERIAU. UNE SIMULATION NUMERIQUE A PERMIS DE MONTRER QU'UN TRAITEMENT LASER AVEC UN REFROIDISSEMENT ADDITIONNEL DE LA PIECE TRAITEE, PERMET D'AUGMENTER NOTABLEMENT LE NIVEAU DE CONTRAINTES RESIDUELLES DE COMPRESSION DANS LA ZONE TRAITEE
Download or read book The Edition XII Guide written by Edition XII and published by . This book was released on 1995 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Over 500 profiles of Postgraduate Science, Health, Computer Sciences and Engineering courses. A comprehensive reference section, with details of over 10 000 Postgraduate Science and Engineering courses. There is also practical editorial giving useful and essential advice and information"--Back cover.
Download or read book African Doctorates in Mathematics written by and published by Lulu.com. This book was released on 2007 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a catalogue of over 2000 doctoral theses by Africans in all fields of mathematics, including applied mathematics, mathematics education and history of mathematics. The introduction contains information about distribution by country, institutions, period, and by gender, about mathematical density, and mobility of mathematicians. Several appendices are included (female doctorate holders, doctorates in mathematics education, doctorates awarded by African universities to non-Africans, doctoral theses by non-Africans about mathematics in Africa, activities of African mathematicians at the service of their communities). Paulus Gerdes compiled the information in his capacity of Chairman of the African Mathematical Union Commission for the History of Mathematics in Africa (AMUCHMA). The book contains a preface by Mohamed Hassan, President of the African Academy of Sciences (AAS) and Executive Director of the Academy of Sciences for the Developing World (TWAS). (383 pp.)
Download or read book Product Life Cycle Management written by Max Giordano and published by John Wiley & Sons. This book was released on 2012-12-17 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a comprehensive view of the most recent major international research in the field of tolerancing, and is an excellent resource for anyone interested in Computer Aided Tolerating. It is organized into 4 parts. Part 1 focuses on the more general problems of tolerance analysis and synthesis, for tolerancing in mechanical design and manufacturing processes. Part 2 specifically highlights the simulation of assembly with defects, and the influence of tolerances on the quality of the assembly. Part 3 deals with measurement aspects, and quality control throughout the life cycle. Different measurement technologies and methods for estimating uncertainty are considered. In Part 4, different aspects of tolerancing and their interactions are explored, from the definition of functional requirement to measurement processes in a PLM approach.
Download or read book Advances in Hydroinformatics written by Philippe Gourbesville and published by Springer. This book was released on 2018-02-26 with total page 1205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers a collection of extended papers based on presentations given during the SimHydro 2017 conference, held in Sophia Antipolis, Nice, France on June 14–16, 2017. It focuses on how to choose the right model in applied hydraulics and considers various aspects, including the modeling and simulation of fast hydraulic transients, 3D modeling, uncertainties and multiphase flows. The book explores both limitations and performance of current models and presents the latest developments in new numerical schemes, high-performance computing, multiphysics and multiscale methods, and better interaction with field or scale model data. It gathers the lastest theoretical and innovative developments in the modeling field and presents some of the most advance applications on various water related topics like uncertainties, flood simulation and complex hydraulic applications. Given its breadth of coverage, it addresses the needs and interests of practitioners, stakeholders, researchers and engineers alike.
Download or read book Medical Image Computing and Computer Assisted Intervention MICCAI 2012 written by Nicholas Ayache and published by Springer. This book was released on 2012-08-28 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three-volume set LNCS 7510, 7511, and 7512 constitutes the refereed proceedings of the 15th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2012, held in Nice, France, in October 2012. Based on rigorous peer reviews, the program committee carefully selected 252 revised papers from 781 submissions for presentation in three volumes. The third volume includes 79 papers organized in topical sections on diffusion imaging: from acquisition to tractography; image acquisition, segmentation and recognition; image registration; neuroimage analysis; analysis of microscopic and optical images; image segmentation; diffusion weighted imaging; computer-aided diagnosis and planning; and microscopic image analysis.
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.
Download or read book Design and Modeling of Mechanical Systems written by Mohamed Haddar and published by Springer Science & Business Media. This book was released on 2013-03-12 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 5th International Congress on Design and Modeling of Mechanical Systems (CMSM) was held in Djerba, Tunisia on March 25-27, 2013 and followed four previous successful editions, which brought together international experts in the fields of design and modeling of mechanical systems, thus contributing to the exchange of information and skills and leading to a considerable progress in research among the participating teams. The fifth edition of the congress (CMSM ́2013), organized by the Unit of Mechanics, Modeling and Manufacturing (U2MP) of the National School of Engineers of Sfax, Tunisia, the Mechanical Engineering Laboratory (MBL) of the National School of Engineers of Monastir, Tunisia and the Mechanics Laboratory of Sousse (LMS) of the National School of Engineers of Sousse, Tunisia, saw a significant increase of the international participation. This edition brought together nearly 300 attendees who exposed their work on the following topics: mechatronics and robotics, dynamics of mechanical systems, fluid structure interaction and vibroacoustics, modeling and analysis of materials and structures, design and manufacturing of mechanical systems. This book is the proceedings of CMSM ́2013 and contains a careful selection of high quality contributions, which were exposed during various sessions of the congress. The original articles presented here provide an overview of recent research advancements accomplished in the field mechanical engineering.
Download or read book Metal Machining written by P.R.N. Childs and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal machining is the most widespread metal-shaping process in the mechanical manufacturing industry. World-wide investment in metal machining tools increases year on year - and the wealth of nations can be judged by it. This text - the most up-to-date in the field - provides in-depth discussion of the theory and application of metal machining at an advanced level. It begins with an overview of the development of metal machining and its role in the current industrial environment and continues with a discussion of the theory and practice of machining. The underlying mechanics are analysed in detail and there are extensive chapters examining applications through a discussion of simulation and process control. "Metal Machining: Theory and Applications" is essential reading for senior undergraduates and postgraduates specialising in cutting technology. It is also an invaluable reference tool for professional engineers. Professors Childs, Maekawa, Obikawa and Yamane are four of the leading authorities on metal machining and have worked together for many years.Of interest to all mechanical, manufacturing and materials engineersTheoretical and practical problems addressed
