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Dissertations / Theses on the topic 'Powder melting'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Barnhart, Bradley K. Barnhart. "Characterization of Powder and the Effects of Powder Reuse in Selective Laser Melting." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1500493469109699.

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2

Weinberg, Johannes (Johannes C. ). "A precision blade mechanism for powder recoating in Selective Laser Melting." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118682.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 111-117).<br>Selective Laser Melting (SLM) is an industrially viable means of additively manufacturing metal components with complex geometries from a wide variety of alloys. In this process, a metal powder is spread onto a build surface in a thin layer, and then the powder is selectively melted to form a cross-sectional slice of the part. This process is repeated until the part is complete. The packing density a

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3

Ayoola, Wasiu Ajibola. "Study of fundamental laser material interaction parameters in solid and powder melting." Thesis, Cranfield University, 2016. http://dspace.lib.cranfield.ac.uk/handle/1826/10025.

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This study attempts to develop a set of parameters controlling the bead profile of deposits in powder melting, based on the spatial energy distribution of laser. Four parameters, identified as the laser material interaction parameters were used to study the bead profile formation in powder melting. The focus is put on control of the dimensional accuracy of powder deposits independently of the optical set-up and laser system. In the initial stage to understand the effect of welding parameters on the development of the fusion zone, a solid metal with homogenous and known thermal properties was u

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4

Hällgren, Sebastian. "Some aspects on designing for metal Powder Bed Fusion." Licentiate thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-62947.

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Additive Manufacturing (AM) using the Powder Bed Fusion (PBF) is a relatively new manufacturing method that is capable of creating shapes that was previously practically impossible to manufacture. Many think it will revolutionize how manufacturing will be done in the future. This thesis is about some aspects of when and how to Design for Additive Manufacturing (DfAM) when using the PBF method in metal materials. Designing complex shapes is neither easy nor always needed, so when to design for AM is a question with different answers depending on industry or product. The cost versus performance

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5

Nilsson, Erik, and Daniel Johansson. "Testing and evaluation of component made using electron beam melting and Alloy 718 powder." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-35566.

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The aerospace industry is constantly striving to becoming more economical and environmentally friendly. One of many efforts to achieve this is the Lightcam project which in this case is evaluating the use of additive manufacturing in the form of electron beam melting in conjunction with the nickel-based superalloy, Alloy 718. This combination is not fully explored and examined. For this purpose, a demonstrator vane was produced and it was subsequently evaluated in this thesis. The evaluation was performed in as-built condition and was divided in non-destructive testing, evaluation of these met

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Feldt, Daniel, Petra Hedberg, Asker Jarlöv, et al. "Independent Project in Chemical Engineering and Materials Engineering : A literature study of powder-based additive manufacturing." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354425.

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The focus of this literary study was additive manufacturing (AM) and the purpose was to find general trends for selected materials that have been additively manufactured and compare them to results from other reviews. The raw materials studied were stainless steels 316L, 17-4 PH, 15-5 PH and 420, as well as tool steel H13 and nickel alloys 625, 718 and Hastelloy X.The AM techniques studied were selective laser melting (SLM), electron beam melting (EBM) and binder jetting (BJG). A total of 69 articles have been studied to fulfill the purpose above. The articles were used to write a summary of

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7

RIZZA, GIOVANNI. "Modelling of the powder sintering process and relative thermal conductivity variation during the electron beam powder bed fusion (PBF-EB)." Doctoral thesis, Politecnico di Torino, 2023. https://hdl.handle.net/11583/2976601.

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8

Kurian, Sachin. "Process-Structure-Property Relationship Study of Selective Laser Melting using Molecular Dynamics." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/104115.

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Selective Laser Melting (SLM), a laser-based Additive Manufacturing technique has appealed to the bio-medical, automotive, and aerospace industries due to its ability to fabricate geometrically complex parts with tailored properties and high-precision end-use products. The SLM processing parameters highly influence the part quality, microstructure, and mechanical properties. The process-structure-property relationship of the SLM process is not well-understood. In the process-structure study, a quasi-2D model of Micro-Selective Laser Melting process using molecular dynamics is developed to inve

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9

Bradford-Vialva, Robyn L. "Development of a Metal-Metal Powder Formulations Approach for Direct Metal Laser Melting of High-Strength Aluminum Alloys." University of Dayton / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1620259752540201.

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10

Roos, Stefan. "Process Development for Electron Beam Melting of 316LN Stainless Steel." Licentiate thesis, Mittuniversitetet, Institutionen för kvalitets- och maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-37840.

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Additive manufacturing (AM) is a technology that inverts the procedure of traditional machining. Instead of starting with a billet of material and removing unwanted parts, the AM manufacturing process starts with an empty workspace and proceeds to fill this workspace with material where it is desired, often in a layer-by-layer fashion. Materials available for AM processing include polymers, concrete, metals, ceramics, paper, photopolymers, and resins. This thesis is concerned with electron beam melting (EBM), which is a powder bed fusion technology that uses an electron beam to selectively mel

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11

Zvoníček, Josef. "Vývoj procesních parametrů pro zpracování hliníkové slitiny AlSi7 technologií Selective Laser Melting." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-444404.

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The diploma thesis deals with the study of the influence of process parameters of AlSi7Mg0.6 aluminum alloy processing using the additive technology Selective Laser Melting. The main objective is to clarify the influence of the individual process parameters on the resulting porosity of the material and its mechanical properties. The thesis deals with the current state of aluminum alloy processing in this way. The actual material research of the work is carried out in successive experiments from the welding test to the volume test with subsequent verification of the mechanical properties of the

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Gaytan, Guillen Sara Marisela. "Additive layer manufacturing of TI-6AL-4V by electron beam melting from powder particles solid, mesh and foam components study /." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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13

Goss, Cullen. "SLM 125 Single Track and Density Cube Characterization for 316L Stainless Steel." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2050.

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Selective Laser Melting is a rapidly developing additive manufacturing technique that can be used to create unique metal parts with tailormade properties not possible using traditional manufacturing. To understand the process from a most basic level, this study investigates system capabilities when melting single tracks of material. Individual tracks allow for a wide range of scan speeds and laser powers to be utilized and the melt pools analyzed. I discuss how existing studies and simulations can be used to narrow down the selection of potentially successful parameter combinations as well as

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Wang, Jincheng. "Selective laser melting of Ti-35NB alloy: Processing, microstructure and properties." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2021. https://ro.ecu.edu.au/theses/2450.

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The initiative of a sustainable material system needs to lower the environmental and economic impact of production processes and adopt new ways of synthesizing and re-using materials. Even though the current conventional manufacturing processes, such as powder metallurgy, casting, forging, and rolling, have already shown their excellent ability to manufacture a large variety of parts and efficiently yield high volume products. Nevertheless, there are still many obstacles in manufacturing metallic components, such as complicated process procedures, high-energy consumption, large material waste,

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Karimi, Neghlani Paria. "Electron beam melting of Alloy 718 : Influence of process parameters on the microstructure." Licentiate thesis, Högskolan Väst, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-13140.

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Additive manufacturing (AM) is the name given to the technology of building 3D parts by adding layer-by-layer of materials, including metals, plastics, concrete, etc. Of the different types of AM techniques, electron beam melting (EBM), as a powder bed fusion technology, has been used in this study. EBM is used to build parts by melting metallic powders by using a highly intense electron beam as the energy source. Compared to a conventional process, EBM offers enhanced efficiency for the production of customized and specific parts in aerospace, space, and medical fields. In addition, the EBM p

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Attar, H., M. Bönisch, M. Calin, et al. "Comparative study of microstructures and mechanical properties of in situ Ti–TiB composites produced by selective laser melting, powder metallurgy, and casting technologies." Cambridge University Press, 2014. https://tud.qucosa.de/id/qucosa%3A39023.

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This study presents results of selective laser melting (SLM), powder metallurgy (PM), and casting technologies applied for producing Ti–TiB composites from Ti–TiB₂ powder. Diffraction patterns and microstructural investigations reveal that chemical reaction occurred between Ti and TiB₂ during all the three processes, leading to the formation of Ti–TiB composites. The ultimate compressive strength of SLM-processed and cast samples are 1421 and 1434 MPa, respectively, whereas the ultimate compressive strengths of PM-processed 25%, 29%, and 36% porous samples are 510, 414, and 310 MPa, respective

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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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Davis, Taylor Matthew. "Feasibility and Impact of Liquid/Liquid-encased Dopants as Method of Composition Control in Laser Powder Bed Fusion." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/9256.

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Additive manufacturing (AM) – and laser powder bed fusion (LPBF) specifically – constructs geometry that would not be possible using standard manufacturing techniques. This geometric versatility allows integration of multiple components into a single part. While this practice can reduce weight and part count, there are also serious drawbacks. One is that the LPBF process can only build parts with a single material. This limitation generally results in over-designing some areas of the part to compensate for the compromise in material choice. Over-designing can lead to decreased functional effic

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Clark, Jared A. "The Effects of Build Orientation on Residual Stresses in AlSi10Mg Laser Powder Bed Fusion Parts." Youngstown State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1578819644598848.

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Marcos, Daniel. "Développement de MOULes INNOVants à haute conductivité thermique pour l’injection de matières plastiques fabriquées par Selective Laser Melting (SLM/LBM)." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEM080.

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Cette thèse a pour objectif de proposer des matériaux adaptés aux attentes d’une empreinte de moule pour l’injection plastique, fabriquée couche par couche par fusion sélective par laser ou « Selective Laser Melting » (SLM). La réalisation d’outillages à haute productivité demande de concevoir des moules à multi-empreintes, à forte dissipation thermique et tenue à l’usure de façon à résister à l’injection de polymères agressifs à haute transition vitreuse et renforcés de fibres de verre. Ces empreintes de moule doivent être à même de supporter de fortes cadences et des cycles thermiques contra

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Berglund, Lina, Filip Ivarsson, and Marcus Rostmark. "Crucial Parameters for Additive Manufacturing of Metals : A Study in Quality Improvement." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254785.

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Production by Additive Manufacturing creates opportunities to make customized products in small batches with less material than in traditional manufacturing. It is more sustainable and suitable for niche products, but entails new production demands to ensure quality. The goal of this study is to define the most crucial parameters when creating Additive Manufactured products in metal and suggest tools for quality improvement. This is done by analysing earlier studies and evaluating the standard production procedures for manufacturing by Selective Laser Melting. The results from this study state

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Streek, André. "Lasermikrosintern." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-231058.

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Die Arbeit analysiert das Lasermikrosintern von Metallen in seiner Gesamtheit durch kalkulierbare Modelle und Formulierungen. Hierfür wird der Sintervorgang in relevante Prozessschritte untergliedert. Die darauf aufbauenden Berechnungen der Prozessparameter werden in Form analytischer Ansätze und durch numerische Simulation analysiert. Anfänglich werden die Modelle der Einzelschritte und deren Resultate werden auf Übereinstimmung mit den experimentellen Daten und Beobachtungen geprüft. Hierbei dienen die Modelle, Algorithmen und analytischen Beziehungen als nachhaltiges Instrumentarium für Ana

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Van, Belle Laurent. "Analyse, modélisation et simulation de l'apparition de contraintes en fusion laser métallique." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0116/document.

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Les procédés additifs, auxquels appartient la fusion laser de poudres métalliques, ont la capacité de créer des structures à géométries complexes, avec la possibilité d'intégrer des formes creuses, par exemple des canaux de refroidissement assurant un contrôle thermique optimum. Ce procédé permet de fabriquer des pièces réelles à partir de poudres métalliques, par fusion du matériau, couche par couche, en accord avec le modèle CAO. Au cours du procédé, de nombreux cycles thermiques et d'importants gradients thermiques se produisent dans la pièce au cours de sa fabrication. Ces gradients de tem

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Fan, Zongyue. "A Lagrangian Meshfree Simulation Framework for Additive Manufacturing of Metals." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1619737226226133.

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Skulina, Daniel. "Zpracování Al-Sc hliníkové slitiny technologií SLM." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318760.

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Master's thesis deals with the experimental determination of process parameters reaching densities >99 % for scandium modified aluminium alloy (Scalmalloy®) processed by SLM. The alloy achieves higher mechanical properties than the AlSi10Mg aluminum alloy commonly used. The theoretical part deals mainly with the results of Scalmalloy® alloys. Experimental bodies, testing methodology and evaluation method were designed on the basis of the theoretical parts,. The practical part is divided into four main stages: experimental determination of process parameters, a description of the effect of the

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Cherri, Alexis. "Poudres PEKK pour la fabrication additive par fusion laser." Thesis, Paris, HESAM, 2022. http://www.theses.fr/2022HESAE031.

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De nos jours, la course au développement de matériaux toujours plus innovants et performants fait subir une constante pression à un grand nombre de secteurs industriels. Parmi eux, l’aéronautique, l’aérospatial, les secteurs de transport et de production d’énergie cherchent à alléger la structure de leurs équipements afin d’en réduire la consommation en énergie et minimiser leur empreinte environnementale. Cet allègement se traduit généralement par la conversion des matériaux métalliques et denses vers des matériaux plastiques et plus légers. La spécificité de ces domaines d’utilisation, ainsi

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Lee, Jiwon. "Novel fabrication of Alloy 625 and MCrAlY bond coat by laser powder bed fusion and microstructure control A novel approach to the production of NiCrAlY bond coat onto IN625 superalloy by selective laser melting Influence of heat treatments on microstructure evolution and mechanical properties of Inconel 625 processed by laser powder bed fusion A new observation of strain-induced grain boundary serration and its underlying mechanism in a Ni–20Cr binary model alloy Heat treatments design for superior high-temperature tensile properties of Alloy 625 produced by selective laser melting High temperature oxidation of NiCrAlY coated Alloy 625 manufactured by selective laser melting." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2020. http://www.theses.fr/2020EMAC0008.

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Dans cette étude, l'alliage 625 a été élaboré par l'une des méthodes de fabrication additive (AM) les plus couramment utilisées, la fusion laser sélective sur lit de poudre (L-PBF), et ses propriétés mécaniques ont été évaluées à différentes températures. L'alliage 625 fabriqué par L-PBF a montré une résistance élevée et un allongement à la rupture médiocre. Ainsi, des traitements thermiques ont été appliqués pour améliorer ses performances. Un traitement thermique de mise en solution à une température supérieure à 1000 °C a été appliquée à l'alliage L-PBF 625, ce qui a entraîné une recristall

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Kumara, Chamara. "Microstructure Modelling of Additive Manufacturing of Alloy 718." Licentiate thesis, Högskolan Väst, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-13197.

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In recent years, additive manufacturing (AM) of Alloy 718 has received increasing interest in the field of manufacturing engineering owing to its attractive features compared to those of conventional manufacturing methods. The ability to produce complicated geometries, low cost of retooling, and control of the microstructure are some of the advantages of the AM process over traditional manufacturing methods. Nevertheless, during the building process, the build material undergoes complex thermal conditions owing to the inherent nature of the process. This results in phase transformation from li

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Royer, Frédéric. "Fonctionnement et singularités du procédé de fusion laser sélective : Illustration par application à deux superalliages à base nickel et considérations énergétiques." Thesis, Paris, ENMP, 2014. http://www.theses.fr/2014ENMP0053/document.

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Le procédé de fusion sélective par laser est un des nombreux procédés de fabrication additive qui permet la production rapide de pièces à partir d'un fichier CAO (conception assistée par ordinateur) et de lits de poudre. Après une description du fonctionnement du procédé par l'intermédiaire de ses paramètres opératoires, le manuscrit décrit les travaux entrepris pour l'élaboration de pièces en Inconel 625. Ce superalliage à base nickel a fait l'objet d'une étude paramétrique pour déterminer un jeu de paramètre optimal permettant de produire des pièces saines. Cette étude est basée sur des cons

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CARROZZA, ALESSANDRO. "Conventional and Innovative Titanium Alloys Produced Using Different Additive Manufacturing Technologies." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2896996.

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Viera, Sotillo Mauricio. "Desarrollo de aleaciones ß Ti-Nb-Mo mediante pulvimetalurgia para aplicaciones biomédicas." Doctoral thesis, Universitat Politècnica de València, 2020. http://hdl.handle.net/10251/156194.

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[ES] Dentro del sector biomédico, el titanio y sus aleaciones han desplazado a otros materiales como el acero inoxidable 316L y las aleaciones Co-Cr por ofrecer un módulo elástico más cercano al hueso cortical, lo que reduce sustancialmente el efecto de apantallamiento de tensiones. Una manera de disminuir aún más el módulo elástico es estabilizando la fase cúbica beta (bcc) del titanio a temperatura ambiente mediante la adición de elementos como el Nb y Mo, cuya biocompatibilidad ha sido comprobada en numerosos estudios. La ruta convencional para el procesado de estas aleaciones es la fundic

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Fateri, Miranda [Verfasser]. "Selective Laser Melting of Glass Powders / Miranda Fateri." München : Verlag Dr. Hut, 2018. http://d-nb.info/1155056159/34.

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Regniere, Matthieu. "Impact du conditionnement de poudres de Ti6Al4V sur le procédé de fusion sélective laser." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEM038/document.

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La fusion Sélective Laser (SLM), en tant que procédé de fabrication additive, permet la conception de formes complexes par une méthode de construction couche par couche, à partir d’un lit de poudre. L’interaction entre la poudre et l’onde électromagnétique est encore trop peu maîtrisée pour stabiliser efficacement la zone de fusion, et optimiser l’énergie utilisée lors du procédé. Cette étude a pour objectif : (a) la compréhension et la maîtrise des mécanismes de mise en couche par rouleau, propre aux machines SLM Phenix; (b) l’analyse et la quantification des évolutions morphologiques et micr

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Lopez, Botello Omar Eduardo. "Simulation of microstructural evolution of selective laser melting of metal powders." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/13675/.

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Selective Laser Melting (SLM) is an Additive Manufacturing (AM) process used to create 3D objects by laser melting pre-deposited powdered feedstock. During SLM, powdered material is fused layer upon layer, the scanning laser melts regions of the powder bed that corresponds to the geometry of the final component. During SLM the component undergoes rapid temperature cycles and steep temperature gradients. These processing conditions generate a specific microstructure for SLM components. Understanding the mechanism by which these generated microstructures evolve can assist in controlling and opti

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Yadroitsau, Ihar. "Direct manufacturing of 3D objects by selective laser melting of metal powders." Saint-Etienne, 2008. http://www.theses.fr/2008STET4006.

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The accomplished doctoral study concerns the interaction of the powerful laser radiation with powder metallic materials. The problem is of a great scientific interest, since it is a multi-disciplinary subject integrating powder metallurgy, thermo-physics, radiation and heat tranfer, phase transformations. Along with this, the subject has a considerable practical interest because Laser-assisted Direct Manufacturing based on Selective Laser Melting (SLM) is an emerging technology for manufacturing 3D functional objects with great added value, and also complex customized parts. Systematic study i

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Saadlaoui, Yassine. "Simulation numérique des procédés thermomécaniques dans une approche couplant les écoulements du fluide avec les déformations du solide : application au soudage laser et à la fusion d'un lit de poudre." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSES005.

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Dans le cadre de ce travail, des méthodes numériques sont développées afin de simuler le soudage laser et la fusion d’un lit de poudre tout en tenant compte de leur complexité. Ces méthodes se reposent sur une nouvelle stratégie de couplage fluide/solide. Elles permettent de simuler la formation de la zone fondue en tenant compte des écoulements du fluide à travers les deux effets de la tension de surface ("effet de courbure" et "effet Marangoni") et la flottabilité. Une approche ALE est utilisée afin de suivre l’évolution de la surface libre. L’interaction entre les écoulements du fluide dans

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Roberts, Ibiye Aseibichin. "Investigation of residual stresses in the laser melting of metal powders in additive layer manufacturing." Thesis, University of Wolverhampton, 2012. http://hdl.handle.net/2436/254913.

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Laser Melting (LM) is an Additive Layer Manufacturing (ALM) process used to produce three-dimensional parts from metal powders by fusing the material in a layerby- layer manner controlled by a CAD model. During LM, rapid temperature cycles and steep temperature gradients occur in the scanned layers. Temperature gradients induce thermal stresses which remain in the part upon completion of the process (i.e. residual stresses). These residual stresses can be detrimental to the functionality and structural integrity of the built parts. The work presented in this thesis developed a finite element m

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Kang, Nan. "Élaboration "in-situ" par mélanges de poudres de composites à matrice métallique au cours du processus de fabrication additive." Thesis, Belfort-Montbéliard, 2016. http://www.theses.fr/2016BELF0305/document.

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La micro fusion laser d'un lit de poudre (SLM) permet la réalisation de pièces complexes avec des microstructuresfines. Cette technologie présente de nombreux avantages mais se heurte encore à une faible disponibilité des poudres d'alliages. En SLM, la pièce est d'abord conçue par CAO (conception assistée par ordinateur), puis construite couche par couche avec un faisceau laser commandé par un ordinateur. Dans ce cadre, le travail effectué dans cette thèse a consisté à étudier et à développer une nouvelle méthode pour réaliser des pièces en alliages et en composites à partir de mélanges de pou

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Schleifenbaum, Johannes Henrich [Verfasser]. "Verfahren und Maschine zur Individualisierten Produktion mit High Power Selective Laser Melting / Johannes Henrich Schleifenbaum." Aachen : Shaker, 2012. http://d-nb.info/1069048801/34.

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Zavala, Arredondo Miguel Angel. "Diode area melting : use of high power diode lasers in additive manufacturing of metallic components." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/18953/.

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Additive manufacturing processes have been developed to a stage where they can now be used to manufacture net-shape high-value components. Selective Laser Melting (SLM) comprises of either a single or multiple deflected high energy fibre laser source(s) (e.g. 200 – 400 W each) to raster scan, melt and fuse layers of metallic powdered feedstock. The beam(s) is(are) deflected by a Scanning Galvo Mirror System and an F-theta lens is used to provide a flat field at the image plane of the scanning system. However, this deflected laser raster scanning methodology is high cost (addition of multiple h

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Fateri, Miranda Verfasser], Reinhard [Akademischer Betreuer] Conradt, Andreas [Akademischer Betreuer] Gebhardt, and Christian Hans-Georg [Akademischer Betreuer] [Roos. "Selective laser melting of glass powders / Miranda Fateri ; Reinhard Conradt, Andreas Gebhardt, Christian Hans-Georg Roos." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1171323778/34.

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Fateri, Miranda [Verfasser], Reinhard Akademischer Betreuer] Conradt, Andreas [Akademischer Betreuer] Gebhardt, and Christian Hans-Georg [Akademischer Betreuer] [Roos. "Selective laser melting of glass powders / Miranda Fateri ; Reinhard Conradt, Andreas Gebhardt, Christian Hans-Georg Roos." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1171323778/34.

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Massard, Quentin. "Compréhension et maîtrise de la mise en oeuvre en fabrication additive d’aciers à haute teneur en carbone tel que le 100Cr6 par fusion sélective par laser sur lit de poudre." Electronic Thesis or Diss., Ecully, Ecole centrale de Lyon, 2022. http://www.theses.fr/2022ECDL0024.

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De nos jours, la production de pièces en acier par fabrication additive (FA) est un sujet central dans le monde de l’industrie, y compris l’automobile. En effet, les possibilités qu’offrent la fabrication additive sont diverses et nombreuses (allègement, formes complexes, …). Le 100Cr6 est un acier à hautes performances mécaniques, principalement utilisé pour la production de roulements à billes, en raison de son importante dureté et résistance à la fatigue. Une étude de processabilité de l’acier 100Cr6 par fusion selective par laser sur lit de poudre a tout d’abord été réalisée. Après avoir c

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Antonysamy, Alphons Anandaraj. "Microstructure, texture and mechanical property evolution during additive manufacturing of Ti6Al4V alloy for aerospace applications." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/microstructure-texture-and-mechanical-property-evolution-during-additive-manufacturing-of-ti6al4v-alloy-for-aerospace-applications(03c4d403-822a-4bfd-a0f8-ef49eb65e7a0).html.

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Additive Manufacturing (AM) is an innovative manufacturing process which offers near-net shape fabrication of complex components, directly from CAD models, without dies or substantial machining, resulting in a reduction in lead-time, waste, and cost. For example, the buy-to-fly ratio for a titanium component machined from forged billet is typically 10-20:1 compared to 5-7:1 when manufactured by AM. However, the production rates for most AM processes are relatively slow and AM is consequently largely of interest to the aerospace, automotive and biomedical industries. In addition, the solidifica

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Kusuma, Chandrakanth. "The Effect of Laser Power and Scan Speed on Melt Pool Characteristics of Pure Titanium and Ti-6Al-4V alloy for Selective Laser Melting." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1464271345.

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Orrit, Prat Jordi. "Study on conduction mechanismes of mediun voltage cable XLPE insulation in the melting range of temperatures." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/83597.

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D’ençà que el polietilè reticulat (XLPE) es va començar a utilitzar com aïllament elèctric per cables de subministrament elèctric, s’han destinat molts esforços a l’estudi de les propietats dielèctriques del polietilè i l’efecte que la càrrega d’espai té sobre el seu comportament. En aquest sentit, les corrents de despolarització estimulades tèrmicament (TSDC) s’han utilitzat extensament per estudiar les relaxacions de càrrega d’espai. Aquesta tècnica ha demostrat tenir prou resolució per distingir diferències en aïllaments de XLPE amb composicions o processos de fabricació diferents. En aques

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Pan, Zhiwen [Verfasser], Antje [Gutachter] Kriltz, and Hartmut [Gutachter] Bartelt. "Consolidation of high melting SiO2-Al2O3-La2o3 glass powders with gas pressure vacuum viscous sintering technology / Zhiwen Pan ; Gutachter: Antje Kriltz, Hartmut Bartelt." Jena : Friedrich-Schiller-Universität Jena, 2016. http://d-nb.info/1177612178/34.

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Ghashami, Bahman. "A New Power Storage, Cooling Storage, and Water Production Combined Cycle (PCWCC)." Thesis, Högskolan i Gävle, Energisystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22725.

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Fresh water shortage and hot weather are common challenges in many countries of the world. In the other hand, the air conditioning systems which are used for indoor cooling cause peak electricity demand during high temperatures hours. This peak hour demand is very important since it is more expensive and mainly is supplied by fossil fuel power plants with lower efficiencies compare to base load fossil fuel or renewable owe plants. Moreover, these peak electricity load fossil fuel power plants cause higher green house gas emission and other environmental effects. So, all these show that any sol

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Stephen, Juanita Peche. "3-D Printing, Characterizing and Evaluating the Mechanical Properties of 316L Stainless Steel Materials with Gradient Microstructure." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/102780.

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Making gradient in the microstructure of metals is proven to be a superior method for improving their mechanical properties. In this research, we 3D print, characterize and evaluate the mechanical properties of 316L Stainless Steel with a gradient in their microstructure. During 3D printing, the gradient in the microstructure is created by tailoring the processing parameters (hatch spacing, scanning speed, and laser power and scanning speed) of the Selective Laser Melting (SLM). The Materials with Graded Microstructure (MGMs) are characterized by optical and scanning electron microscopy (SEM).

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Zhu, Yi, Shuai Wang, Chao Zhang, and Huayong Yang. "Am-driven design of hydraulic manifolds: enhancing fluid flow and reducing weight." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71084.

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Selective laser melting (SLM), one type of metal additive manufacturing (AM) technology, uses a highintensity laser to selectively melt pre-spread metal powders by a layer-on-layer manner. The technology does not only provide a new way of manufacturing but also innovates product design methodology. In this study, a hydraulic block manifold is designed and manufactured using SLM. In this paper, we present an AM-driven design approach of hydraulic manifolds based on a case study. The target is not only to reduce weight but also to enhance fluid flow by optimizing fluid path to reduce pressure dr

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