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Tesis sobre el tema "Processus de solidification"

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Publicado: 30 de noviembre de 2024

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1

Droux, Jean-Jacques. "Simulation numérique bidimensionnelle et tridimensionnelle de processus de solidification /." [S.l.] : [s.n.], 1991. http://library.epfl.ch/theses/?nr=901.

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2

Lamazouade, André. "Modélisation du processus de croissance cristalline de Bridgman par une méthode enthalpique." Aix-Marseille 2, 2000. http://www.theses.fr/2000AIX22049.

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3

Dalmazzone-Jolivet, Christine. "Impact de la surfusion sur le processus de solidification dans une opération de prilling." Compiègne, 1992. http://www.theses.fr/1992COMPD551.

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L'objet de cette étude était de mettre en évidence l'influence des paramètres liés à la surfusion sur la solidification des produits organiques. Le procédé industriel de solidification auquel nous nous sommes intéressés est le prilling, dont le dimensionnement est très dépendant de la surfusion des produits que l'on souhaite mettre en forme par cette opération. Notre travail a comporté trois étapes principales : - Une étude préliminaire des conditions de solidification de différents produits organiques par Analyse Enthalpique Différentielle ; - Une étude plus approfondie de la surfusion d'un p
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4

Hachani, Lakhdar. "Etude de l'influence de la convection naturelle et forcée sur le processus de la solidification : cas d'un alliage métallique binaire." Phd thesis, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00949060.

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Ce travail se situé dans la perspective d'un contrôle de la structure de solidification des alliages métalliques sous l'effet de la convection naturelle et forcée afin d'améliorer à terme la maîtrise des microstructures de solidification grâce à un brassage électromagnétique efficace permettant d'avoir une homogénéisation du bain liquide qui par la suite peut améliorer la microstructure finale de l'alliage. La possibilité retenue dans ce travail est de réaliser ce brassage sans contact avec la solution liquide (alliage sous fusion) et sans pollution par d'autres éléments en utilisant un brassa
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5

Yaghi, Mohammed. "Phase Field Modeling of Water Solidification : A Port-Hamiltonian Approach." Electronic Thesis or Diss., Lyon 1, 2024. http://www.theses.fr/2024LYO10198.

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Cette thèse présente une étude sur la modélisation, la formulation par le formalisme des Systèmes Hamiltoniens à ports et la discrétisation des processus de solidification dont l'interface est supposée diffuse et est modélisée par l'approche des champs de phase. Ses travaux traitent en détail de la solidification de l'eau dans le contexte de fournir des modèles numériques adaptés à la simulation, à la conception et au contrôle de procédés de purification de l'eau. Le premier chapitre rappelle d'abord de manière synthétique les modèles physiques de systèmes biphasique et de leur interface. Il p
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6

Hassan, Hamdy Abo Ali. "Etude et optimisation des transferts de chaleur en injection moulage : analyse de leur influence sur les propriétés finales." Thesis, Bordeaux 1, 2009. http://www.theses.fr/2009BOR13956.

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Les plastiques sont typiquement des polymères de grand poids moléculaire. Ils peuvent contenir des autres substances pour améliorer leurs performances et/ou pour réduire les prix. L'industrie plastique est l'une des industries qui a la croissance la plus rapide du monde : de nombreux produits de la vie quotidienne contiennent l'utilisation du produit plastique. Il y a différents procédés pour la mise en forme des polymères (soufflage, moulage par soufflage, moulage par compression, moulage par transfert, extrusion, moulage par injection) pour lesquels les matériaux utilisés, la qualité et la f
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7

Mehrabi, M. Reza. "Modeling transport processes in directional solidification." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/11999.

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8

Leung, Winnie C. M. "Thermomechanical analyses of metal solidification processes." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/42561.

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9

Gao, Fuquan. "Molten microdrop deposition and solidification processes." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/11622.

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10

Chakraborty, Suman. "Studies On Momentum, Heat And Mass Transfer In Binary Alloy Solidification Processes." Thesis, Indian Institute of Science, 2001. https://etd.iisc.ac.in/handle/2005/287.

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The primary focus of the present work is the development of macro-models for numerical simulation of binary alloy solidification processes, consistent with microscopic phase-change considerations, with a particular emphasis on capturing the effects of non-equilibrium species redistribution on overall macrosegregation behaviour. As a first step, a generalised macroscopic framework is developed for mathematical modelling of the process. The complete set of equivalent single-phase governing equations (mass, momentum, energy and species conservation) are solved following a pressure-based Finite Vo
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11

Chakraborty, Suman. "Studies On Momentum, Heat And Mass Transfer In Binary Alloy Solidification Processes." Thesis, Indian Institute of Science, 2001. http://hdl.handle.net/2005/287.

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The primary focus of the present work is the development of macro-models for numerical simulation of binary alloy solidification processes, consistent with microscopic phase-change considerations, with a particular emphasis on capturing the effects of non-equilibrium species redistribution on overall macrosegregation behaviour. As a first step, a generalised macroscopic framework is developed for mathematical modelling of the process. The complete set of equivalent single-phase governing equations (mass, momentum, energy and species conservation) are solved following a pressure-based Finite Vo
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12

Hoadley, Andrew Forbes Alexander. "Modelling of heat flow in batch solidification processes." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278260.

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13

Tropsa, Vlado. "Predicting residual stresses due to solidification in cast plastic plates." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271561.

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14

Messiaen, Laure. "Recherche de paramètres morphologiques influents pour la prévision des caractéristiques mécaniques d'un acier austénoferritique." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 1997. http://tel.archives-ouvertes.fr/tel-00817970.

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Les aciers inoxydables austénoferritiques sont couramment utilisés dans l'industrie (nucléaire en particulier) pour leurs bonnes propriétés, notamment mécaniques. Cependant ces aciers sont susceptibles de "vieillir" en cours d'utilisation à des températures élevées. Comme ces propriétés (résilience, ténacité) sont souvent très dispersées et se dégradent lors du vieillissement, on cherche à les prévoir avec la plus grande précision possible. Pour ce faire on propose d'expliquer une partie de la dispersion observée sur la résilience par des paramètres mesurables, liés à la morphologie biphasée e
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15

Huang, Ying. "Treatment of PCB-contaminated soil by stabilization and solidification processes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ39663.pdf.

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16

Pagalthivarthi, Krishnan V. "Thermosolutal convection and related transport processes in binary alloy solidification." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/18245.

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17

Sharpe, Michael Anthony. "On convection and stability of some welding and solidification processes." Thesis, University of Southampton, 2000. https://eprints.soton.ac.uk/50624/.

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In this thesis a variety of problems are considered, the first of which is associated with the welding process. Experiments indicate that the shape of a weld pool is influenced by convection in the liquid metal. In recent years it has been shown that this convection is crucially affected by the Marangoni (or thermocapillary) force. Recently Craine and Belgrove ([30], [7]) have developed a two-dimensional, axisymmetric model which includes the Marangoni force on the free surface of a semi-infinite region of liquid steel when a point source of current and heat is incident on the free surface. An
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18

Chen, Yin-Heng. "Study of solidification, shrinkage and natural convection in casting processes /." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487676847114631.

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19

Chow, Peter M. Y. "Control volume unstructured mesh procedure for convection-diffusion solidification processes." Thesis, University of Greenwich, 1993. http://gala.gre.ac.uk/6133/.

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The research work presented herein addresses the unstructured mesh problem in finite volume (FV) or control volume (CV) method used in numerical simulations. The modelling work conducted is in context of solidification for casting processes. The control volume-unstructured mesh (CV-UM) method can be categorised into two approaches, a vertex-centred and a cell-centred approach. The classification of the approach is based on the relationship between the control volume and the unstructured mesh. The vertex-centred is naturally unstructured and has been used successfully in fluid flow and heat tra
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20

Maffettone, Roberta. "Stabilization/solidification processes for the treatment of contaminated soil and waste." Doctoral thesis, Universita degli studi di Salerno, 2015. http://hdl.handle.net/10556/1753.

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2013-2014<br>Recovering industrial waste and contaminated soil is one of the main objectives in environmental management. Nowadays in Italy, landfilling is responsible for up to 40% of total soil contamination and up to 50% of the used remediation techniques involves excavation and disposal. On the other hand, the European Legislation has set key drivers to improve waste management, as setting recycling targets and limiting the use of landfilling with its rising cost. In this scenario, new technologies to reduce the toxicity of contaminated soil and hazardous waste before their disposal
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21

Ahmad, Nasir. "Numerical simulation of transport processes in multicomponent systems related to solidification problems /." [S.l.] : [s.n.], 1995. http://library.epfl.ch/theses/?nr=1349.

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22

Kapellakis, Iosif Emmanouil. "Olive mill wastewater management and treatment through soil, aquatic and solidification processes." Thesis, Glasgow Caledonian University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422022.

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23

Juang, Shueiwan Henry. "Finite element analysis of flow and solidification: application to die casting processes." The Ohio State University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=osu1244133006.

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24

Juang, Shuei-wan Henry. "Finite element analysis of flow and solidification : application to die casting processes /." Connect to resource, 1991. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1244133006.

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25

Xu, Rui. "Control of heat and fluid flow in solidification processes by an inverse method." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0026/MQ52088.pdf.

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26

Zhang, Shaojie. "Numerical simulation of mechanical interactions between liquid and solid phase in solidification processes." Thesis, Université Paris sciences et lettres, 2020. https://pastel.archives-ouvertes.fr/tel-02897918.

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La maîtrise des phénomènes de macroségrégation et des défauts liés à la déformation est le principal enjeu des processus de solidification. La modélisation numérique apporte une réponse aux besoins industriels pour maîtriser ces défauts. L'un des problèmes les plus critiques et essentiels est le calcul simultané de l'écoulement du fluide dans les régions liquides et de l'évolution contrainte-déformation dans les régions déjà solidifiées. Dans ce but spécifique, un algorithme de solution partitionnée est développé pour modéliser à la fois les processus de coulée en lingots et de coulée continue
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27

Ranganathan, Sathees. "Rapid solidification behaviour of Fe and Al based alloys." Doctoral thesis, KTH, Materialvetenskap, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11325.

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Rapid solidification experiment on Fe-Cr-Mo-Mn-Si-C alloy was performed to investigate metastable phases formed during the solidification. A wide range of cooling rate was used to analyse the sample from melt spinning technique (~107 K/s) to water quenching method (~102 K/s). A single phase featureless structure was obtaind initially in the melt spinning experiment for 77Fe-8Cr-6Mn-5Si-4C alloy. Reduction of C and addition of Mo led to form a complete featureless structure for 2.85 mm rod for 72.8Fe-8Cr-5Mo-6Mn-5Si-3.2C. Subsequent investigation of influence of Mo, Cr and Mn on the single phas
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28

Kirkpatrick, Timothy. "The kinetics of tin solidification in lead-free solder joints." Diss., Online access via UMI:, 2006.

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29

Kinyanjui, Robert. "Thermal processes and solidification kinetics of evolution of the microstructure of Sn-xAg-yCu solder alloys." Diss., Online access via UMI:, 2005.

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Thesis (Ph. D.)--State University of New York at Binghamton, Thomas J. Watson School of Engineering and Applied Science, Multidisciplinary Program in Materials Science and Engineering, 2005.<br>Includes bibliographical references.
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30

Mondragon, Camacho Ricardo. "Non-physical enthalpy method for phase change modelling in the solidification process." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/nonphysical-enthalpy-method-for-phase-change-modelling-in-the-solidification-process(2ab7597c-eaaa-44d8-abb8-0bf49e413c76).html.

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This research is concerned with the development of a mathematical approach for energy and mass transport in solidification modelling involving a control volume (CV) technique and finite element method (FEM) and incorporating non-physical variables in its solution. The former technique is used to determine an equivalent capacitance to describe energy transport whilst the latter technique provides temperatures over the material domain. The numerical solution of the transport equations is achieved by the introduction of two concepts, i.e. weighted transport equations and non-physical variables. T
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31

Kotadia, Hirenkumar R. "Solidification behaviour of Al-Sn-Cu immiscible alloys and Al-Si cast alloys processed under intensive shearing." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/4517.

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Alloy castings are usually solidified with a coarse columnar grain structure under normal casting conditions unless the mode of the solidification is carefully controlled. It is desirable for the grain structure to be fine and equiaxed to improve their mechanical performance as finished castings. It is possible to develop a fine and equiaxed grain structure either by increasing the number of nucleation sites or by grain multiplication. Immiscible alloys with a microstructure in which a soft phase is dispersed homogeneously in a hard matrix have significant potential applications in advanced be
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32

Dias, Antonio Carlos Pires. "Solidificação de ligas euteticas livres de Pb para soldagem : parametros termicos e microestrutura." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264429.

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Orientadores: Amauri Garcia, Noe Cheung<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-14T16:40:44Z (GMT). No. of bitstreams: 1 Dias_AntonioCarlosPires_M.pdf: 13091267 bytes, checksum: c4c7c0e72c88328cba1119cc9cd6d650 (MD5) Previous issue date: 2009<br>Resumo: As ligas de solda à base de estanho apresentam excelente fluidez e temperaturas de trabalho ideais para a união de componentes eletrônicos. A solda com ligas do sistema estanho chumbo é a mais comum para soldas em eletrônica. Entretanto, há muitas p
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33

Narra, Sneha Prabha. "Melt Pool Geometry and Microstructure Control Across Alloys in Metal Based Additive Manufacturing Processes." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/914.

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There is growing interest in using additive manufacturing for various alloy systems and industrial applications. However, existing process development and part qualification techniques, both involve extensive experimentation-based procedures which are expensive and time-consuming. Recent developments in understanding the process control show promise toward the efforts to address these challenges. The current research uses the process mapping approach to achieve control of melt pool geometry and microstructure in different alloy systems, in addition to location specific control of microstructur
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34

Kotova, Yulia. "Entwicklung und Implementierung von Programmmodulen zur Simulation gießtechnischer Prozesse." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2010. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-39300.

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In Rahmen dieser Arbeit wurde ein Simulationsprogramm für Gießprozesse weiterentwickelt. Zunächst wurden die Richtigkeit der mathematischen Lösung und die Sensibilität der Software bestätigt. Dazu wurde ein Vergleich der berechneten mit den experimentellen Werten durchgeführt. Zur Messung der Wanddicke des erstarrenden Gussteils wurde eine neue Methode zur Visualisierung der Berechnungsergebnisse erarbeitet. Anhand zweier Beispiele zur Berechnung eines dünnwandigen, komplizierten Al-Gussteils und eines exothermischen Speisers wurde eine korrekte Nutzung neuer Gießtechnologien aufgezeigt. Das S
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35

Gockel, Joy E. "Integrated Control of Solidification Microstructure and Melt Pool Dimensions In Additive Manufacturing Of Ti - 6Al - 4V." Research Showcase @ CMU, 2014. http://repository.cmu.edu/dissertations/374.

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Additive manufacturing (AM) offers reduced material waste and energy usage, as well as an increase in precision. Direct metal AM is used not only for prototyping, but to produce final production parts in the aerospace, medical, automotive and other industries. Process mapping is an approach that represents process outcomes in terms of process input variables. Solidification microstructure process maps are developed for single bead and thin wall deposits of Ti-6Al-4V via an electron beam wire feed and electron beam powder bed AM process. Process variable combinations yielding constant beta grai
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36

Kuchi, Satish C. "Effect of Finite Geometry on Solidification Microstructure in Beam-Based Fabrication of Thin Wall Structures." Wright State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=wright1253252782.

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37

Cante, Manuel Venceslau. "Solidificação transitoria, microestrutura e propriedades de ligas Al-Ni." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265081.

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Orientador: Amauri Garcia<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-14T11:35:39Z (GMT). No. of bitstreams: 1 Cante_ManuelVenceslau_D.pdf: 12795296 bytes, checksum: bd8bf91fcf479b66a28e7e3d6b5f7090 (MD5) Previous issue date: 2009<br>Resumo: O desenvolvimento de microestruturas otimizadas durante o processo de solidificação são de fundamental importância nas propriedades e desempenho de produtos acabados baseados em ligas metálicas. Neste estudo é analisada a cinética envolvida no processo de solidificação,
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38

Belsito, Danielle L. "Application of Computational Thermodynamic and Solidification Kinetics to Cold Sprayable Powder Alloy Design." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-dissertations/28.

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Military aircraft that require high maneuverability, durability, ballistic protection, reparability, and energy efficiency require structural alloys with low density, high toughness, and high strength. Also, repairs to these aircraft demand a production process that has the flexibility to be relatively in-situ with the same high-performance output. Materials produced by the cold spray process, a thermo-mechanical powder consolidation technique, meet many of the requirements. In accordance with President Obama’s 2011 Materials Genome Initiative, the focus of this effort is to design customiz
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39

Moj, Lukas [Verfasser]. "A two-scale, two-phase model for the numerical simulation of thermal driven solidification processes during casting and forming of metallic materials / Lukas Moj." Aachen : Shaker, 2017. http://d-nb.info/1149268972/34.

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40

Mercader, Célia. "Filage continu de fibres de nanotubes de carbone : de la solidification aux propriétés finales." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14095/document.

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Ce travail de thèse concerne l'étude du filage et des propriétés de fibres composites à base denanotubes de carbone. Les propriétés mécaniques des fibres en cours de solidification et enmouvement dans un bain de coagulation sont évaluées afin d'étudier l'influence de différentsparamètres physico-chimiques impliqués dans leur fabrication. Ces fibres, combinant despropriétés mécaniques et électriques prometteuses, peuvent être obtenues de façon continuegrâce au développement d'un nouveau procédé de filage. Elles présentent de plus un effetoriginal de mémoire de température dont l'origine est étu
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41

Sheridan, Luke Charles. "An Adapted Approach to ProcessMapping Across Alloy Systems and Additive Manufacturing Processes." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1471861921.

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42

Yang, Ming. "Numerical Modeling of Aluminum Sampling Process." Thesis, KTH, Materialvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-241102.

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Castings of aluminum alloys are widely used in the automotive and aerospace industries since they play a significant role in improving the performance and fuel efficiency. In aluminum industries, sampling is the most common method to evaluate the inclusion levels which is a key indicator for the quality of the aluminum alloys. Since how the filling process and solidification process will influence the inclusion characteristics during the sampling procedure is of great importance, the objectives of this work is to create a the two-phase flow model to simulate the filling process and solidificat
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43

LEGRAND, BEATRICE. "Texturation par solidification sous champ magnetique d'alliages samarium-cobalt. Application a l'elaboration d'aimants permanents massifs." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10237.

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La solidification d'un alliage liquide en presence d'un champ magnetique statique est une methode originale permettant d'elaborer des materiaux polycristallins orientes. D'excellents resultats de texturation sont obtenus experimentalement avec des composes samarium-cobalt, sous la forme d'alliages binaires comme le smco#5 ou substitues sm(co, cu, fe, zr)#z (z variant de 5 a 8,34), dans des conditions de solidification tres diverses (en creuset froid inductif, en creuset refractaire, par coulee). Grace a un champ magnetique de quelques tesla, les echantillons sont orientes cristallographiquemen
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44

Scuracchio, Bruno Geoffroy. "Influência dos elementos de liga no intervalo de solidificação do aço inoxidável martensítico CA6NM." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-10032009-215046/.

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Foi investigada a influência de elementos de liga como o Cromo, o Níquel, o Carbono e o Nitrogênio no intervalo de solidificação de um aço inoxidável martensítico fundido do tipo CA6NM. Este tipo de aço, utilizado na fundição de peças de grande porte, é bastante utilizado pela sua ótima resistência ao impacto, e boas propriedades contra corrosão em meio aquoso. Além disso, este aço possui ótima fundibilidade, tendo como principal característica seu reduzido intervalo de solidificação, o que torna diminutos os defeitos relacionados a este fenômeno. Resultados obtidos por cálculos termodinâmicos
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45

Ericsson, Ola. "An Experimental Study of Liquid Steel Sampling." Licentiate thesis, Stockholm : Skolan för industriell teknik och management, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10518.

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46

Alves, Luiz Henrique Dias [UNESP]. "Utilização do método de Taguchi na modelagem e otimização de vazios relacionados à solidificação em processo de fundição de aço ABNT 1030." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/106431.

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Made available in DSpace on 2014-06-11T19:35:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-12-18Bitstream added on 2014-06-13T20:46:43Z : No. of bitstreams: 1 alves_lhd_dr_guara.pdf: 2379670 bytes, checksum: 1a59c87cd9293dbd93fa101676adf89e (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O grande número de variáveis envolvidas no processo de fundição de aço o torna muito susceptível a ocorrência de defeitos relacionados à solidificação como rechupes e poros, que elevam o custo de fabricação devido ao sucateamento e retrabalho de peças. Explorando o
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Santos, Newton Silva. "Simulação fisica e numerica do processo de lingotamento continuo rotativo." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264712.

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Orientador: Amauri Garcia<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-04T22:38:42Z (GMT). No. of bitstreams: 1 Santos_NewtonSilva_M.pdf: 11404473 bytes, checksum: e3fa93c65cc03106c6ee4c62e3694589 (MD5) Previous issue date: 2005<br>Resumo: O presente trabalho descreve o desenvolvimento de um simulador físico estático do processo de lingotamento contínuo rotativo, como parte de uma metodologia experimental auxiliada por um modelo matemático para a determinação de coeficientes transitórios globais de tran
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Bertelli, Felipe. "Simulação numérica e análise experimental do tratamento superficial por refusão a laser de uma liga Al-Fe." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264533.

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Orientadores: Amauri Garcia, Noé Cheung<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-16T22:32:29Z (GMT). No. of bitstreams: 1 Bertelli_Felipe_M.pdf: 6382019 bytes, checksum: 7bc62ea83b7e721ef82e5669d236559f (MD5) Previous issue date: 2010<br>Resumo: Neste trabalho, o software ANSYS, baseado no Método dos Elementos Finitos, é adaptado para a simulação tridimensional do fluxo de calor no processo de refusão superficial a laser. A análise numérica é validada com resultados simulados por outros modelos exis
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49

Alves, Luiz Henrique Dias. "Utilização do método de Taguchi na modelagem e otimização de vazios relacionados à solidificação em processo de fundição de aço ABNT 1030 /." Guaratinguetá : [s.n.], 2009. http://hdl.handle.net/11449/106431.

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Resumo: O grande número de variáveis envolvidas no processo de fundição de aço o torna muito susceptível a ocorrência de defeitos relacionados à solidificação como rechupes e poros, que elevam o custo de fabricação devido ao sucateamento e retrabalho de peças. Explorando oportunidades neste cenário, esta Tese de Doutorado, desenvolvida dentro do ambiente industrial de uma fundição de aço propõe um modelo matemático capaz de predizer a combinação de níveis de variáveis de processo que minimizam a ocorrência de rechupes e poros relacionados à solidificação em peças fundidas em aço ABNT 1030, mol
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50

Djurdja, Kerkez. "Potencijal upotrebe piritne izgoretine u tretmanu otpadnih voda i mogućnost njene dalje sanacije primenom imobilizacionih agenasa." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2014. https://www.cris.uns.ac.rs/record.jsf?recordId=89491&source=NDLTD&language=en.

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Predmet&nbsp; izučavanja&nbsp; ove&nbsp; disertacije&nbsp; bio&nbsp; je&nbsp; ispitivanje&nbsp; mogućnosti&nbsp; kori&scaron;ćenja&nbsp; piritne&nbsp;izgoretine&nbsp; u&nbsp; tretmanu&nbsp; otpadnih&nbsp; voda&nbsp; tekstilne&nbsp; industrije&nbsp; kao&nbsp; i&nbsp; dalji&nbsp; tretman&nbsp; mulja&nbsp; nastalog&nbsp;nakon ovog procesa. Naime, nakon iskori&scaron;ćenja ovog otpada &nbsp;u Fenton procesima, iskori&scaron;ćena&nbsp;piritna izgoretina u najvećem procentu čini mulj koji zaostaje nakon tretmana. Kako se piritna&nbsp;ruda jo&scaron; u procesu proizvodnje sumporne kiseline&nbsp; kori
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