Dissertations / Theses on the topic 'Metal Manufacturing'
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PEDEMONTE, LAURA CHIARA. "Laser in Metal Additive Manufacturing." Doctoral thesis, Università degli studi di Genova, 2019. http://hdl.handle.net/11567/973605.
Full textTurner, David Bentley. "An assessment of Magic Metal Company." Online version, 1998. http://www.uwstout.edu/lib/thesis/1998/1998turnerd.pdf.
Full textJaques, Mark W. S. "Design by manufacturing simulation." Thesis, University of Portsmouth, 1994. https://researchportal.port.ac.uk/portal/en/theses/design-by-manufacturing-simulation(73339fbe-283d-4a11-a225-33cabf5e7332).html.
Full textMcCarthy, David Lee. "Creating Complex Hollow Metal Geometries Using Additive Manufacturing and Metal Plating." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/43530.
Full textMaster of Science
Farshbaf, Mohamad Reza. "Mixed metal forming/machining flexible manufacturing system." Thesis, Open University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277924.
Full textByron, Andrew James. "Qualification and characterization of metal additive manufacturing." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104315.
Full textThesis: S.M. in Engineering Systems, Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2016. In conjunction with the Leaders for Global Operations Program at MIT.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 119-123).
Additive manufacturing (AM) has emerged as an effective and efficient way to digitally manufacture complicated structures. Raytheon Missile Systems seeks to gain limited production capability with metals AM, which can only be achieved with qualified, predictable processes that reduce variation. The project documented in this thesis produced two results needed to qualify AM for use on flight-critical parts: i) creation of a standard qualification process building upon Raytheon's product development knowledge, and ii) selection and identification of key metals AM process factors and their corresponding experimental responses. The project has delivered a qualification test plan and process that will be used next year to drive adoption and integration of Raytheon's metals AM technology. The first phase of the designed experiment on AM process factors was completed by experimenting with coupon orientation, position on the build platform, coupon shape and hot isostatic pressing (HIP) post-treatment for an Al alloy (AlSi10Mg) produced via laser powder bed fusion using 400-watt laser equipment. Only coupon orientation had a statistically significant effect on dimensional accuracy, increasing the variance of y-axis (within the build plane) error by ~50%, although this is considered a small increase. HIP decreased yield and ultimate stresses by ~60% while increasing ultimate strain by ~250%. Vertical orientation of coupons decreased yield and ultimate stresses by ~25% and increased ultimate strain by ~30%. Small coupon area on the build platform, associated with thin rectangle coupons, decreased yield stress and ultimate strain by ~5%. The processes and case study from this thesis represent a general advance in the adoption of metals AM in aerospace manufacturing.
by Andrew James Byron.
M.B.A.
S.M. in Engineering Systems
Trumper, Richard Leslie. "Fabrication of metal matrix composites by low pressure liquid metal infiltration." Thesis, University of Bath, 1993. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358941.
Full textNyembwe, Kasongo Didier. "Tool manufacturing by metal casting in sand moulds produced by additive manufacturing processes." Thesis, Bloemfontein : Central University of Technology, Free State, 2012. http://hdl.handle.net/11462/162.
Full textIn this study an alternative indirect Rapid Tooling process is proposed. It essentially consists of producing sand moulds by Additive Manufacturing (AM) processes followed by casting of tools in the moulds. Various features of this tool making method have been investigated. A process chain for the proposed tool manufacturing method was conceptually developed. This process chain referred to as Rapid Casting for Tooling (RCT) is made up of five steps including Computer Aided Design (CAD) modeling, casting simulation, AM of moulds, metal casting and finishing operations. A validation stage is also provided to determine the suitability of the tool geometry and material for RCT. The theoretical assessment of the RCT process chain indicated that it has potential benefits such as short manufacturing time, low manufacturing cost and good quality of tools in terms of surface finish and dimensional accuracy. Focusing on the step of AM of the sand moulds, the selection of available AM processes between the Laser Sintering (LS) using an EOSINT S 700 machine and Three Dimensional Printing using a Z-Corporation Spectrum 550 printer was addressed by means of the Analytic Hierarchy Process (AHP). The criteria considered at this stage were manufacturing time, manufacturing cost, surface finish and dimensional accuracy. LS was found to be the most suitable for RCT compared to Three Dimensional Printing. The overall preferences for these two alternatives were respectively calculated at 73% and 27%. LS was then used as the default AM process of sand moulds in the present research work. A practical implementation of RCT to the manufacturing of foundry tooling used a case study provided by a local foundry. It consisted of the production of a sand casting pattern in cast iron for a high pressure moulding machine. The investigation confirmed the feasibility of RCT for producing foundry tools. In addition it demonstrated the crucial role of casting simulation in the prevention of casting defects and the prediction of tool properties. The challenges of RCT were found to be exogenous mainly related to workmanship. An assessment of RCT manufacturing time and cost was conducted using the case study above mentioned as well as an additional one dealing with the manufacturing of an aluminium die for the production of lost wax patterns. Durations and prices of RCT steps were carefully recorded and aggregated. The results indicated that the AM of moulds was the rate determining and cost driving step of RCT if procurement of technology was considered to be a sunk cost. Overall RCT was found to be faster but more expensive than machining and investment casting. Modern surface analyses and scanning techniques were used to assess the quality of RCT tools in terms of surface finish and dimensional accuracy. The best surface finish obtained for the cast dies had Ra and Rz respectively equal to 3.23 μm and 11.38 μm. In terms of dimensional accuracy, 82% of cast die points coincided with die Computer Aided Design (CAD) data which is within the typical tolerances of sand cast products. The investigation also showed that mould coating contributed slightly to the improvement of the cast tool surface finish. Finally this study also found that the additive manufacturing of the sand mould was the chief factor responsible for the loss of dimensional accuracy. Because of the above, it was concluded that light machining will always be required to improve the surface finish and the dimensional accuracy of cast tools. Durability was the last characteristic of RCT tools to be assessed. This property was empirically inferred from the mechanical properties and metallographic analysis of castings. Merit of durability figures of 0.048 to 0.152 were obtained for the cast tools. It was found that tools obtained from Direct Croning (DC) moulds have merit of durability figures three times higher than the tools produced from Z-Cast moulds thus a better resistance to abrasion wear of the former tools compared to the latter.
GALATI, MANUELA. "Design of product and process for Metal Additive Manufacturing - From design to manufacturing." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2688272.
Full textHoltz, Heath M. (Heath Mikal). "Re-sourcing manufacturing processes in metal forming operations." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/34859.
Full textIncludes bibliographical references (p. 75-76).
Deciding which activities to conduct in-house and which to outsource has become increasingly important due to its implications on a company's supply chain and overall business model. A number of factors can lead a company to outsource manufacturing processes. As a result of this outsourcing, the supply chain can become very complex and overwhelming to manage. This thesis will analyze this situation from the perspective of one manufacturer, American Axle and Manufacturing, Inc. (AAM). AAM's Metal Formed Products (MFP) Division currently has a number of challenges: rising steel prices, fixed labor costs and declining sales. All these factors have significantly impacted profitability, forcing senior management to take a comprehensive look at the division and consider developing a plan to improve divisional operations. As a part of this plan, MFP Division's senior management asked for a thorough look into all of the manufacturing processes performed by the division both internally and by outside suppliers. In addition to identifying the processes and suppliers, senior management sought to highlight opportunities for improving the process flow through the re-sourcing of manufacturing processes. This project develops a framework to analyze and evaluate these re-sourcing decisions. This framework employs a five-step approach and incorporates a number of diverse analytical tools. Process flow mapping provided a tool to visually highlight the best opportunities to resource. In addition to a visual representation, process flow mapping also provided the data to financially evaluate alternatives. Strategic and market factors were identified in order to target and prioritize re-sourcing efforts.
(cont.) This framework provides a structure for sourcing decisions that balances the financial and strategic concerns. The project concluded in a $2M investment to re-source heat treating to AAM facilities.
by Heath M. Holtz.
S.M.
M.B.A.
Pereira, M. F. V. T., M. Williams, and R. Bruwer. "Rapid die manufacturing using direct laser metal deposition." Journal for New Generation Sciences, Vol 7, Issue 3: Central University of Technology, Free State, Bloemfontein, 2009. http://hdl.handle.net/11462/542.
Full textGlobal issues such as energy and climate changes have impacted on both the automotive and aerospace industries, forcing them to adopt measures to produce products that consume fewer combustibles and emit less carbon dioxide. Making vehicles lighter is one of the logical ways of reducing fuel consumption. The need for light components, able to fulfil technical and quality specifications, led to market growth for tooling that is able to mass produce parts using manufacturing processes such as high pressure die casting. Competitive pressures to reduce the lead time required for tooling-up has also increased dramatically. For this reason research into various methods, techniques and approaches to tool manufacture is being undertaken globally. This paper highlights the work undertaken at the CSIR on the issue of rapid die manufacturing through the application and evaluation of a rapid prototyping technique and coating technologies applied to die components of a high pressure casting die for the production of aluminium components. Criteria for determining suitability were developed against which the technique was evaluated that included time, cost and life-expectancy. Results of accelerated testing procedures to evaluate the die material produced by the rapid prototyping technique and surface coatings and treatments of die materials for their resistance to washout, erosion, heat checking and corrosion in a high pressure die casting environment, are presented. The outcomes of this research will be used for further development and application of specific techniques, design principles and criteria for this approach.
Scott, Andrew James. "Automated nesting of sheet metal parts." Thesis, University of Bath, 1996. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320561.
Full textRissanen, Leena. "Manufacturing and irradiation of thin transition metal nitride films." Doctoral thesis, [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=963553887.
Full textCunningham, Ross W. "Defect Formation Mechanisms in Powder-Bed Metal Additive Manufacturing." Research Showcase @ CMU, 2018. http://repository.cmu.edu/dissertations/1160.
Full textGopalakrishnan, Srimathy. "Optimization models for production planning in metal sheet manufacturing." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/36427.
Full textIncludes bibliographical references (leaves 84-85).
by Srimathy Gopalakrishnan.
M.S.
Balsamy, Kamaraj Abishek. "Study of Localized Electrochemical Deposition for Metal Additive Manufacturing." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1539078938687749.
Full textBrandal, Øystein. "Interfacial (o/w) Properties of Naphthenic Acids and Metal Naphthenates, Naphthenic Acid Characterization and Metal Naphthenate Inhibition." Doctoral thesis, Norwegian University of Science and Technology, Department of Chemical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-651.
Full textDeposition of metal naphthenates in process facilities is becoming a huge problem for petroleum companies producing highly acidic crudes. In this thesis, the main focus has been towards the oil-water (o/w) interfacial properties of naphthenic acids and their ability to react with different divalent cations across the interface to form metal naphthenates.
The pendant drop technique was utilized to determine dynamic interfacial tensions (IFT) between model oil containing naphthenic acid, synthetic as well as indigenous acid mixtures, and pH adjusted water upon addition of different divalent cations. Changes in IFT caused by the divalent cations were correlated to reaction mechanisms by considering two reaction steps with subsequent binding of acid monomers to the divalent cation. The results were discussed in light of degree of cation hydration and naphthenic acid conformation, which affect the interfacial conditions and thus the rate of formation of 2:1 complexes of acid and cations. Moreover, addition of non-ionic oil-soluble surfactants used as basis compounds in naphthenate inhibitors was found to hinder a completion of the reaction through interfacial dilution of the acid monomers.
Formation and stability of metal naphthenate films at o/w interfaces were studied by means of Langmuir technique with a trough designed for liquid-liquid systems. The effects of different naphthenic acids, divalent cations, and pH of the subphase were investigated. The results were correlated to acid structure, cation hydration, and degree of dissociation, which all affect the film stability against compression.
Naphthenic acids acquired from a metal naphthenate deposit were characterized by different spectroscopic techniques. The sample was found to consist of a narrow family of 4-protic naphthenic acids with molecular weights around 1230 g/mol. These acids were found to be very o/w interfacially active compared to normal crude acids, and to form Langmuir monolayers with stability depending on the aqueous pH. At high pH, addition of Ca2+ increased the film stability due to formation of calcium naphthenate at the surface.
A new experimental setup based on near infrared spectroscopy was used to monitor the formation, growth, and inhibition of calcium naphthenate particles in o/w systems. This method was found to be suitable for studies of particle formation rate and growth qualitatively under different experimental conditions.
Otieno, Andrew Michael Wasonga. "Computer-aided analysis of metal machining." Thesis, University of Leeds, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251490.
Full textKodira, Ganapathy D. "Investigation of an Investment Casting Method Combined with Additive Manufacturing Methods for Manufacturing Lattice Structures." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc283786/.
Full textPowell, Nicholas Newton. "Incremental forming of flanged sheet metal components." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357609.
Full textJenkins, Martin Anthony. "Rapid Prototyping by micro spray metal deposition." Thesis, University of Exeter, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363429.
Full textLindsay, Neil J. "Joining metal matrix composites and related alloys." Thesis, University of Bath, 1993. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332323.
Full textFoschini, Alessandro. "Application of Additive Manufacturing to long fibers Metal Matrix Composites." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Ba, Housseinou. "Manufacturing of metal-free carbon-based catalysts for styrene production." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAF026/document.
Full textStyrene (ST) is one of the most important unsaturated aromatic monomers in modern petrochemical industry. The catalytic dehydrogenation reaction (DH) of ethylbenzene (EB) into styrene, which accounts for 90% of the ST production, demands highly activated and stabilized catalysts, as well as easily handing and efficient mass diffusion. In this work, we developed novel metal-free carbon-based materials using nanodiamonds (NDs) as an active phase for potential industrial catalysts for the direct dehydrogenation route to produce ST. The NDs were successfully immobilized on different 2D and 3D carbon-based and silicon carbide supports which could help to improve their dispersion, leading to metal-free catalyst with high catalytic performance and stability. We have also succeeded in synthesizing nitrogen-doped carbon materials (N@C) displaying a high and stable dehydrogenation activity for the ST production in place of NDs. These active N@C catalysts were produced from food processing materials, i.e. D-glucose, citric acid and ammonium carbonate, and could be also easily dressed on macroscopic supports by a facile and scalable method
Hussein, Ahmed Yussuf. "The development of lightweight cellular structures for metal additive manufacturing." Thesis, University of Exeter, 2013. http://hdl.handle.net/10871/15023.
Full textAndersson, Dickfors Robin, and Nick Grannas. "OBJECT DETECTION USING DEEP LEARNING ON METAL CHIPS IN MANUFACTURING." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-55068.
Full textDIGICOGS
Valli, Giuseppe <1989>. "Metal additive manufacturing of soft magnetic material for electric machines." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10131/1/Valli_Giuseppe_tesi.pdf.
Full textRanjan, Rajit. "Design for Manufacturing and Topology Optimization in Additive Manufacturing." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439307951.
Full textKhan, Shamsul Arefin. "Deep sub-micron MOS transistor design and manufacturing sensitivity analysis /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Full textAllwood, Julian Mark. "Online modelling and control and shape phenomena in metal rolling." Thesis, Imperial College London, 1993. http://hdl.handle.net/10044/1/7503.
Full textMahmoud, El-Amin A. "Machining with titanium nitride-coated metal tools." Thesis, Aston University, 1988. http://publications.aston.ac.uk/11912/.
Full textCan, Yilmaz. "Incremental metal forming and analysis of tube spinning." Thesis, University of Bath, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390223.
Full textSingh, Aparajita. "Improving Current-Asymmetry of Metal-Insulator-Metal Tunnel Junctions." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2827.
Full textMiranda, Neiva Eric. "Large-scale tree-based unfitted finite elements for metal additive manufacturing." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/669823.
Full textAquesta tesi tracta la simulació a gran escala d'equacions en derivades parcials sobre geometries variables. L'aplicació principal és la simulació de procesos de fabricació additiva (o impressió 3D) amb metalls i per mètodes de fusió de llit de pols, com ara Selective Laser Melting (SLM), Direct Metal Laser Sintering (DMLS) o Electron-Beam Melting (EBM). La simulació d'aquests processos és un repte computacional excepcional, perquè els processos estan caracteritzats per múltiples escales espaitemporals i múltiples físiques que tenen lloc sobre geometries tridimensionals complicades que creixen en el temps. La sinèrgia entre algorismes numèrics avançats i eines de computació científica d'alt rendiment és la única via per resoldre completament i a curt termini les necessitats en simulació d'aquesta àrea. El principal objectiu d'aquesta tesi és dissenyar un nou marc numèric escalable de simulació amb capacitat de multiresolució en geometries complexes i variables. El nou marc es construeix unint tres eines computacionals: (1) mallat paral·lel i adaptatiu amb malles de boscs d'arbre, (2) mètodes d'elements finits immersos robustos i (3) modelització en paral·lel amb elements finits de geometries que creixen en el temps. Algunes limitacions i problemes oberts en l'estat de l'art, que són claus per aconseguir el nostre objectiu, guien la nostra recerca. Tots els desenvolupaments s'implementen en arquitectures de memòria distribuïda amb el programari d'accés obert FEMPAR. Quant al problema d'aplicació, (4) s'investiguen models reduïts en espai i temps per models tèrmics del procés. Aquests models reduïts s'acoplen al nostre marc computacional per simplificar l'optimització del procés. Les contribucions d'aquesta tesi abasten els quatre punts de dalt. L'estat de l'art de (1) es millora substancialment amb proves riguroses dels beneficis computacionals del 2:1 balancejat (fàcil paral·lelització i alta escalabilitat), així com dels requisits mínims que aquest tipus de mallat han de complir per garantir que els espais d'elements finits que s'hi defineixin estiguin ben posats. Quant a (2), s'ha formulat un mètode robust, òptim i escalable per agregació per problemes el·líptics amb contorn o interface immerses. Després d'augmentar (1)+(2) amb un nova estratègia paral·lela per (3), el marc de simulació resultant mitiga de manera efectiva el principal coll d'ampolla en la simulació de processos de fabricació additiva en llits de pols de metall: adaptivitat i remallat escalable en geometries complexes que creixen en el temps. Durant el desenvolupament de la tesi, es col·labora amb el Monash Centre for Additive Manufacturing i la Universitat de Monash de Melbourne, Austràlia, per investigar el problema d'aplicació. En primer lloc, es fa una anàlisi experimental i numèrica exhaustiva dels mètodes d'aggregació temporal. En segon lloc, es proposa i valida experimental una nova formulació de contacte tèrmic que té en compte la inèrcia tèrmica i és adequat per a localitzar el model, l'anomenada aproximació per dominis virtuals. Mitjançant l'ús eficient de recursos computacionals d'alt rendiment, el nostre nou marc computacional fa possible l'anàlisi d'elements finits a gran escala dels processos de fabricació additiva amb metalls, amb augment de la fidelitat de les prediccions i reduccions significatives de temps de computació. Així mateix, es pot combinar amb els models reduïts que es proposen per l'optimització tèrmica del procés de fabricació. Aquestes eines contribueixen a accelerar la comprensió del lligam procés-rendiment i la digitalització del disseny i certificació de productes en fabricació additiva per metalls, dues fites crucials per explotar la tecnologia en producció en massa.
Butt, Javaid. "A novel additive manufacturing process for the production of metal parts." Thesis, Anglia Ruskin University, 2016. http://arro.anglia.ac.uk/701001/.
Full textSyed, Waheed Ul Haq. "Combined wire and powder deposition for laser direct metal additive manufacturing." Thesis, University of Manchester, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556499.
Full textGullapalli, Vikranth. "Study of Metal Whiskers Growth and Mitigation Technique Using Additive Manufacturing." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc804972/.
Full textRossie, Kathleen Eaton. "An energy and environmental analysis of aerospace sheet metal part manufacturing." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101487.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 223-246).
In this thesis we analyze the energy and environmental impacts of sheet metal manufacturing, focusing on the aerospace industry. The motivation of this work is the introduction of a new incremental sheet forming (ISF) technology called RAFFT, which substitutes heavy part specific dies for flexible generic tools but with a slower processing rate. The analysis has two sections. The first section analyzes the current aerospace sheet forming technological and economic landscape in order to determine RAFFT's probable adoption rate and predict which technologies it will displace. The second section includes four energy and lifecycle analysis (LCA) case studies on traditional forming technologies. The first section maps the process capabilities of twenty sheet forming technologies. It also describes the business needs and typical practices of the aerospace industry, including a classification of the different business needs for parts. We find that stretch forming and flexforming (also known as a bladder press or hydroforming) dominate current aerospace production, and superplastic forming SPF is used when high formability is required. Machining is used extensively for very low volume production, such as prototyping. We find that the new RAFFT technology is best suited for very low volume production such as the production of replacement parts. The second section includes energy and LCA case studies for titanium SPF, aluminum SPF, flexforming, and stretch forming. Moreover, case studies on kirksite and cast iron die manufacturing are completed because these materials are used in forming dies. We find that SPF uses more energy and has higher impacts than stretch and flexforming. We also find that each technology has high "baseload" (no forming) electricity use due to heat losses in SPF and circulation of hydraulic fluid in stretch and flexforming, meaning that cycle time is a critical factor in electricity use. Lastly, we find that the material for the blank, the die, and the electricity can each dominate impacts depending on the particular characteristics of each case because a) the aerospace industry is willing to invest significant resources, be it time, energy, or material, to produce the desired part and b) the required amount of blank, die, and electricity are dependent on uncorrelated factors.
by Kathleen Eaton Rossie.
S.M.
Famodimu, Omotoyosi Helen. "Additive manufacturing of aluminium-metal matrix composite developed through mechanical alloying." Thesis, University of Wolverhampton, 2016. http://hdl.handle.net/2436/620337.
Full textButt, Javaid. "A novel additive manufacturing process for the production of metal parts." Thesis, Anglia Ruskin University, 2016. https://arro.anglia.ac.uk/id/eprint/701001/6/Butt_2016_thesis.pdf.
Full textSnelling, Jr Dean Andrew. "A Process for Manufacturing Metal-Ceramic Cellular Materials with Designed Mesostructure." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/51606.
Full textPh. D.
Jonsson, Andreas. "New Manufacturing Technology for Volume Optimization of Parts : Amorphous Metal Moulding." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-85513.
Full textAmorfa metaller har fått mycket uppmärksamhet sedan deras introduktion under 1960-talet och användandet och kunskaperna ökar i snabb takt. Den bakomliggande orsaken för denna trend är viljan att utnyttja dessa materials unika kombination av egenskaper. Nya tillverkningstekniker såsom amorf metallgjutning (AMM) har möjliggjort tillverkningen av större och mer komplexa amorfa produkter i större produktionsvolymer än tidigare. För att framgångsrikt implementera AMM till utvecklingen och produktionen av produkter måste kunskap kring dess styrkor och svagheter utvärderas. Men även kunskap hur man ska förhålla sig till den när man konstruerar AMM detaljer. Målet med detta examensarbete var att undersöka genomförandet och potentiella fördelar av att använda amorfametaller gjorda med AMM både teoretiskt via akademisk forskning och i praktiken genom att omkonstruera en existerande produkt för att tillverkas med teknologin. Processer hur man identifierar produkter som är lämpliga att tillverka med AMM och sedan hur dessa ska konstrueras formulerades. Den akademiska litteraturen samlades i en litteraturstudie och användes tillsammans med en dialog med en tillverkare till att formulera dessa processer. Processerna användes sedan för att omkonstruera den nuvarande tändrörshållardesigner för att tillgodose de nya tillverkningskraven som uppstår från AMM. En 3D-modell konstruerades och analyserades sedan för att säkerställaen konstruktion med tillräcklig hållfasthet. Det visades att betydande volymminskningar var möjliga men till en följd av ökad vikt och kostnad på grund avden amorfa legeringens högre densitet och kostnad jämfört med nuvarande aluminiumlegering. Vidare demonstrerades att det vid skrivande stund inte var möjligt att tillverka tändrörshållarna med AMM på grund av teknologins nuvarande begränsningar. Dock visades att en liten kolv som i dagsläget tillverkas i stål kunde tillverkasmed AMM vilket resulterade i en minskning av volymen, massan och kostnaden. För att bekräfta resultaten i denna studie samt för att gå vidare bör en prototyp tillverkas och testas. Detta för att bekräfta både analysens integritet men även för att bekräfta att konstruktionen når upp till de andra kraven som ställs på tändrörshållare såsom miljö- och funktionskrav.
Snelling, Dean Andrew Jr. "A Process for Manufacturing Metal-Ceramic Cellular Materials with Designed Mesostructure." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/51606.
Full textPh. D.
TESTA, Cristian (ORCID:0000-0002-6064-9851). "Corrosion behaviour of metal alloys obtained by means of additive manufacturing." Doctoral thesis, Università degli studi di Bergamo, 2020. http://hdl.handle.net/10446/181512.
Full textOgbogu, S. O. E. "Electromagnetic stirring in the continuous casting of molten metal." Thesis, University of Bradford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374933.
Full textMahdi, Wathik Issa. "Tool contact stresses and chip formation in metal machining." Thesis, University of Bradford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254204.
Full textHirst, Adrian Anthony. "Fume formation in flux cored metal inert gas welding." Thesis, University of Bradford, 1990. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306180.
Full textSandford, Andrew Robert Brian. "Effect of manganese and nickel on the cleavage fracture strength of ferritic weld metal." Thesis, London Metropolitan University, 1990. http://repository.londonmet.ac.uk/3058/.
Full textGasser, Jonathan. "AN ANALYSIS OF ENERGY RESOURCES UTILIZATION FOR TWO METAL JOINING MANUFACTURING PROCESSES." UKnowledge, 2014. http://uknowledge.uky.edu/me_etds/32.
Full textKoh, Yang Sook. "Cleaning of metal artefacts using pulsed lasers." Licentiate thesis, Luleå tekniska universitet, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18460.
Full textGodkänd; 2002; 20070224 (ysko)