Download or read book Instrumentation et controle en temps reel de traitements de surface par laser avec passage a l etat liquide written by Hugues Derouet and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CONTROLE EN TEMPS REEL DE TEMPERATURES AU COURS DE TRAITEMENTS DE SURFACE PAR LASER CO 2 MULTIKILOWATT written by FRANCOIS.. BATAILLE and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS LE BUT D'AMELIORER LA REPRODUCTIBILITE DES TRAITEMENTS DE SURFACE PAR LASER CO#2 CONTINU MULTIKILOWATT ET DE FACILITER LEUR APPLICATION A DES PIECES DE GEOMETRIE COMPLEXE, UN CONTROLE EN TEMPS REEL DE TEMPERATURES A ETE MIS AU POINT. UN PYROMETRE A BALAYAGE FOURNIT UNE LIGNE DE MESURE DE TEMPERATURE EN SURFACE; LA TEMPERATURE MAXIMUM ATTEINTE EN SURFACE EN EST EXTRAITE ET UN CALCUL DE THERMIQUE EN TEMPS REEL PERMET D'EVALUER LA TEMPERATURE MAXIMUM ATTEINTE A UNE PROFONDEUR DEFINIE. DES CORRECTEURS ACTIONNENT ALORS LA PUISSANCE DU LASER ET LA VITESSE DE BALAYAGE DU FAISCEAU EN VUE DE MAINTENIR CONSTANT CE COUPLE DE TEMPERATURES

Download or read book Laser de puissance et traitements des mat riaux written by Centre national de la recherche scientifique (France) and published by EPFL Press. This book was released on 1991-01-01 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CONTRIBUTION AU CONTROLE EN TEMPS REEL DES PROCEDES METALLURGIQUES PAR FAISCEAU LASER DE PUISSANCE APPLICATION AU DURCISSEMENT SUPERFICIEL EN PHASE SOLIDE written by JEAN-FRANCOIS.. COUTOULY and published by . This book was released on 1994 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS LE CADRE D'UNE ACTION VISANT A L'AMELIORATION DES PROCEDES METALLURGIQUES PAR FAISCEAU LASER, NOUS NOUS SOMMES ENGAGES DANS L'ETUDE ET LA REALISATION DE SYSTEMES DE CONTROLES EN TEMPS REEL ADAPTES AUX OPERATIONS DE TRAITEMENTS DE SURFACE EN PHASE SOLIDE. TROIS POINTS PRINCIPAUX ONT ETE ABORDES. LE CONTROLE DE LA REPARTITION ENERGETIQUE DU FAISCEAU LASER EST REALISE PAR UN ANALYSEUR DE TYPE LBA. CET APPAREIL A ETE CONSIDERABLEMENT AMELIORE GRACE A LA MISE EN PLACE D'UN SYSTEME D'ACQUISITIONS AUTOMATIQUES ET LA REALISATION D'UN LOGICIEL DE CORRECTIONS. UNE EXPLOITATION QUANTITATIVE DES SIGNAUX A ETE REALISEE: RECONSTITUTION DE LA REPARTITION D'ENERGIE REELLE, CALCUL DE LA PUISSANCE GLOBALE TRANSPORTEE, SUIVI PRECIS DE L'ERREUR DE POINTAGE. UNE CHAINE D'ASSERVISSEMENT DE LA PUISSANCE GLOBALE DU FAISCEAU A ETE REALISEE, CE QUI PERMET DE REDUIRE LES DERIVES INHERENTES AUX FORTES PUISSANCES. DES ELEMENTS VISANT A ABOUTIR A UNE REGULATION DE TEMPERATURE ONT ETE APPORTES: LE PROBLEME DE L'EVOLUTION DE L'EMISSIVITE AU COURS D'UNE TREMPE SUR ACIER XC 55 A ETE ELUCIDE, CE QUI AUTORISE DESORMAIS UNE MEILLEURE UTILISATION DES OUTILS DE MESURE THERMOGRAPHIQUES. PARALLELEMENT, LES VARIATIONS D'ABSORPTIVITE ONT ETE QUANTIFIEES CE QUI PERMET D'ENVISAGER L'UTILISATION DE MODELES THERMIQUES PREVISIONNELS EFFICACES ET COMPATIBLES AVEC LES EXIGENCES DU TEMPS REEL

Download or read book Lasers de Puissance et Traitements Superficials written by and published by Ed. Techniques Ingénieur. This book was released on with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CONTRIBUTION A L OPTIMISATION DES TRAITEMENTS LASER EN PHASE SOLIDE written by CARLOS.. REGO DE OLIVEIRA and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS LE CADRE D'UNE ACTION AYANT POUR OBJECTIF L'OPTIMISATION ET LE CONTROLE DU PROCESS LASER EN VUE D'APPLICATIONS EN TRAITEMENTS SUPERFICIELS, LA PRESENTE ETUDE A ETE PLUS SPECIALEMENT CONSACREE A LA CARACTERISATION DES REPARTITIONS ENERGETIQUES DES FAISCEAUX LASER ET A LA MODELISATION DE L'INTERACTION LASER-MATERIAU. POUR CELA ONT ETE DEGAGES DES PARAMETRES PERTINENTS INTERVENANT DANS LA DESCRIPTION DES EFFETS INDUITS ET PERMETTANT DE DECRIRE DES REPARTITIONS ENERGETIQUES PLUS OU MOINS COMPLEXES. UNE METHODE D'EVALUATION EXPERIMENTALE DE CES PARAMETRES A ETE DEVELOPPEE. ENSUITE UN MODELE PERMETTANT DE PREVOIR PLUS RAPIDEMENT QU'AVEC LES METHODES DE CALCUL NUMERIQUES CLASSIQUES LES CHAMPS DE TEMPERATURE SUPERFICIELLE AVEC UNE PRECISION ACCEPTABLE POUR UNE UTILISATION EN CONTROLE, EN TEMPS REEL, A ETE PROPOSE. LA VALIDATION DU MODELE A ETE REALISEE AU MOYEN D'UNE CONFRONTATION AVEC LE SUIVI EXPERIMENTA DE L'EVOLUTION DES TEMPERATURES DE SURFACE AU MOYEN D'UNE CAMERA IR A BALAYAGE POUR DIFFERENTS TYPES DE REPARTITIONS ENERGETIQUES INCIDENTES ET EN SITUATION DE FAISCEAU FIXE OU MOBILE. ENFIN, UNE ATTENTION PLUS PARTICULIERE A ETE PORTEE A L'ETUDE DE L'ABSORPTION D'UN RAYONNEMENT IR PAR UN SUBSTRAT REVETU OU NON EN VUE DE PROPOSER DES SOLUTIONS PERMETTANT L'AMELIORATION DU COUPLAGE DANS LE CAS DU TRAITEMENT DES MATERIAUX METALLIQUES

Download or read book Contibution exp rimentale aux traitements de surface par laser avec apport de poudres written by Philippe Lagain and published by . This book was released on 1989 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: CONSACREE ESSENTIELLEMENT A L'ANALYSE DES PHENOMENES SURVENANT LORS DE L'INTERACTION ENTRE UN FAISCEAU LASER CO#2 CONTINU ET DES PARTICULES METALLIQUES DE QUELQUES DIZAINES DE MICROMETRES, CETTE ETUDE EXPERIMENTALE EST UNE APPROCHE COMPLEMENTAIRE POUR INTERPRETER ET CONTROLER LA FORMATION D'ALLIAGE OU LE DEPOT DE SURFACE PAR LASER AVEC APPORT DE POUDRE. ELLE COMPORTE UNE PHASE EXPERIMENTALE INITIALE DE CARACTERISATION DES ECOULEMENTS A PARTICULES QUI SE CONCRETISE PAR LE DEVELOPPEMENT D'UN DISPOSITIF DE VISUALISATION DES TRAJECTOIRES DES PARTICULES ET DE MESURE DE LEURS VITESSES. LA DETERMINATION DES VITESSES ET DES CONCENTRATIONS VOLUMIQUES DES PARTICULES CONSTITUE UNE ETAPE INDISPENSABLE POUR EVALUER L'ENERGIE QU'ELLES ABSORBENT PENDANT LEUR TEMPS D'ILLUMINATION DANS LE FAISCEAU LASER AINSI QUE L'ATTENUATION DU FAISCEAU PAR LE NUAGE DE PARTICULES. LA REALISATION D'UN DISPOSITIF POUR CARACTERISER CES DEUX GRANDEURS (ABSORPTION ET ATTENUATION), EN PRESENCE DU FAISCEAU LASER, CONSTITUE LA PARTIE EXPERIMENTALE DE L'ETUDE. L'EXPLOITATION DU BILAN ENERGETIQUE RELATIF AU NUAGE DE PARTICULES, DEVRAIT SIMPLIFIER LA RECHERCHE SYSTEMATIQUE DES PARAMETRES DE TRAITEMENT DE SURFACE. LE DISPOSITIF DE QUALIFICATION DES ECOULEMENTS MIS AU POINT, PERMET D'OPTIMISER LA GEOMETRIE DES INJECTEURS DE POUDRE EN VUE D'UNE INDUSTRIALISATION DU PROCEDE

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.

Download or read book Properties of UO2 written by J. Belle and published by . This book was released on 1957 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gas cooled Nuclear Reactors written by France. Commissariat à l'énergie atomique and published by . This book was released on 2006 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ramjet Engines written by Mikhail Makarovich Bondari͡u︡k and published by . This book was released on 1969 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Science Past Science Future written by Isaac Asimov and published by Doubleday Books. This book was released on 1975 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of 43 essays on many subjects, from the various sciences to essays about society.

Download or read book A Textbook of Translation written by Peter Newmark and published by . This book was released on 1987 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vitreous Substitutes written by Gholam A. Peyman and published by McGraw-Hill/Appleton & Lange. This book was released on 1995 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Turbulence VII written by Uriel Frisch and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Turbulence VII contains an overview of the state of turbulence research with some bias towards work done in Europe. It represents an almost complete collection of the invited and contributed papers delivered at the Seventh European Turbulence Conference, sponsored by EUROMECH and ERCOFTAC and organized by the Observatoire de la Côte d'Azur. New high-Reynolds number experiments combined with new techniques of imaging, non-intrusive probing, processing and simulation provide high-quality data which put significant constraints on possible theories. For the first time, it has been shown, for a class of passive scalar problems, why dimensional analysis sometimes gives the wrong answers and how anomalous intermittency corrections can be calculated from first principles. The volume is thus geared towards specialists in the area of flow turbulence who could not attend the conference as well as anybody interested in this rapidly moving field.

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.