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Dissertations / Theses on the topic 'Additive mapping'

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1

Fisher, Brian A. "Part Temperature Effects in Powder Bed Fusion Additive Manufacturing of Ti-6Al-4V." Research Showcase @ CMU, 2018. http://repository.cmu.edu/dissertations/1154.

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To ensure the widespread adoption of metal Additive Manufacturing (AM) processes, a complete understanding of the interactions between process variables is necessary. The process variables of beam power, beam velocity, deposition geometry, and beam diameter have been shown in prior works to have major effects on resultant melt pool and solidification characteristics, but this list is incomplete. Without accounting for part temperatures prior to deposition, unintended outcomes may result. In the current work, Ti-6Al-4V is studied in the Powder Bed Fusion (PBF) processes to gain an in-depth unde
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2

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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3

Nagel, Mona. "Exploring digital innovations : mapping 3D printing within the textile and sportswear industry." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-22000.

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Digital innovations are about to overtake the supply chain systems and revolutionize the way of producing products. With the use of technology in the value chain a sustainable development can be generated and developed. The usage of digital tools for manufacturing can minimize waste and further develop sustained processing. 3D printing is a technology that produces products by adding layer by layer of material. The additive manufacturing process theoretically produces no waste and aims for a sustainable and efficient processing. The textile and sportswear industry adopted this process for high
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4

Scime, Luke Robson. "Methods for the Expansion of Additive Manufacturing Process Space and the Development of In-Situ Process Monitoring Methodologies." Research Showcase @ CMU, 2018. http://repository.cmu.edu/dissertations/1183.

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Metal Additive Manufacturing (AM) promises an era of highly flexible part production, replete with unprecedented levels of design freedom and inherently short supply chains. But as AM transitions from a technology primarily used for prototyping to a viable manufacturing method, many challenges must first be met before these dreams can become reality. In order for machine users to continue pushing the design envelope, process space must be expanded beyond the limits currently recommended by the machine manufacturers. Furthermore, as usable process space expands and demands for reduced operator
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5

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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6

Gygi, Cameron Scott. "Crack Healing in 304L Stainless Steel Using Additive Manufacturing and Friction Stir Processing (FSP)." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6530.

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Continuing an investigation on using FSP to heal stress corrosion cracks (SCC) in welds on nuclear reactors, this study seeks to use AM in addition to FSP to aid crack repair. Previous studies address that current repair technology on nuclear reactors involves the use of TIG welding which can allow helium atoms to aggregate and form voids at the grain boundaries. This weakens the material and renders the repair ineffective. Another previous study evaluated the effectiveness of FSP alone in repairing SCC which did have defects depending on the parameters used during FSP. This study evaluated th
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7

Lindell, David. "Process Mapping for Laser Metal Deposition of Wire using Thermal Simulations : A prediction of material transfer stability." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-85474.

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Additive manufacturing (AM) is a quickly rising method of manufacturing due to its ability to increase design freedom. This allows the manufacturing of components not possible by traditional subtractive manufacturing. AM can greatly reduce lead time and material waste, therefore decreasing the cost and environmental impact. The adoption of AM in the aerospace industry requires strict control and predictability of the material deposition to ensure safe flights.  The method of AM for this thesis is Laser Metal Deposition with wire (LMD-w). Using wire as a feedstock introduces a potential problem
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8

Serquera, Jaime. "Sound synthesis with cellular automata." Thesis, University of Plymouth, 2012. http://hdl.handle.net/10026.1/1189.

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This thesis reports on new music technology research which investigates the use of cellular automata (CA) for the digital synthesis of dynamic sounds. The research addresses the problem of the sound design limitations of synthesis techniques based on CA. These limitations fundamentally stem from the unpredictable and autonomous nature of these computational models. Therefore, the aim of this thesis is to develop a sound synthesis technique based on CA capable of allowing a sound design process. A critical analysis of previous research in this area will be presented in order to justify that thi
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9

Rosa, Alessandro Samuel. "Funções de predição espacial de propriedades do solo." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/5551.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The possibility of mapping soil properties using soil spatial prediction functions (SSPFe) is a reality. But is it possible to SSPFe to estimate soil properties such as the particlesize distribution (psd) in a young, unstable and geologically complex geomorphologic surface? What would be considered a good performance in such situation and what alternatives do we have to improve it? With the present study I try to find answers to such questions. To do so I used a set of 339 soil samples from a small catchment of the hillslope area
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10

Oulton, David. "Selected papers on colorimetric theory and colour modeling." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/selected-papers-on-colorimetric-theory-and-colour-modeling(e4f13600-5d8e-45a8-afce-846647130dfb).html.

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The annotated papers that are submitted as part of this thesis consider the phenomenon of colour at the fundamental, technical, and application levels, and they were written and published by Oulton between 1990 and 2009. The papers disclose significant insights by the author into colorimetric modeling theory and report aspects of the author's work that have led to commercially successful practical applications. The academic significance of these papers is evident in their citation record; their practical value is shown by a number of successful industrial collaboration programmes, and through
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11

Garg, Chirag. "Identities with derivations in prime and semiprime rings." Thesis, 2017. http://localhost:8080/xmlui/handle/12345678/7528.

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12

"Microstructural and Mechanical Property Characterization of Laser Additive Manufactured (LAM) Rhenium." Doctoral diss., 2012. http://hdl.handle.net/2286/R.I.14777.

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abstract: This report will review the mechanical and microstructural properties of the refractory element rhenium (Re) deposited using Laser Additive Manufacturing (LAM). With useable structural strength over 2200 °C, existing applications up to 2760 °C, very high strength, ductility and chemical resistance, interest in Re is understandable. This study includes data about tensile properties including tensile data up to 1925 °C, fracture modes, fatigue and microstructure including deformation systems and potential applications of that information. The bulk mechanical test data will be correlate
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13

Zeng, Guan-Cheng, and 曾冠逞. "On Hardy-Hilbert Type Inequalities and Stability of Cauchy Additive Mappings." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/80965927858906631726.

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碩士<br>國立中央大學<br>數學研究所<br>96<br>This thesis is concerned with two subjects of research; Hardy-Hilbert type inequalities and the stability of Cauchy additive mappings. The following are done : 1) to extend B. Yang''s result on the norm of a bounded self- adjoint integral operator T : L2 (0,∞) → L2 (0,∞) and its applications to Hardy-Hilbert type integral inequalities from the space L2 (0,∞) to the space Lp (0,∞) with p > 1 ; 2) to generalize Rassias''s theorem on the stability of Cauchy additive mappings ; 3) to give a correct proof of Park et al''s theorem in [6]; 4) to approximate the odd par
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14

Suen, Der-Fen, and 孫德芬. "Gene mapping in nicotiana sylvestris using alien monosomic addition lines." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/49759282641930928860.

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碩士<br>國立臺灣大學<br>植物學研究所<br>83<br>An allotriploid hybrid (genomes PPS) obtained from proto-plast fusion between haploid Nicotiana plumbaginifolia (P, n=10) and haploid N. sylvestris (S, n=12) was backcrossed to monosomic chromosome addition lines. A total of 93 2n=21 plants, each containing a 2n chromosome complement of N. plumbaginifolia and a single chromosome of N. sylvestris, appeared in the BC and BC ge- nerations. The 2n=21 plants could be classified into 13 groups based on morphological characteristics. The N. sylvestris chromosomes in the 2n=21 plants were determinated by RFLP markers a
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15

Lin, Tian-Yu, and 林天鈺. "Using Synchrotron Radiation Mapping to Investigate the Iron-addition Effects on the Nickel-Aluminide Alloys." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/97291372587209207895.

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碩士<br>國立中央大學<br>化學工程與材料工程學系<br>101<br>Like most other intermetallics, unalloyed Nickel Aluminide systems have many important applications but also lack the ductility at room temperature. In this study, three kinds of Nickel Aluminide alloys were prepared with different Fe content (0, 0.25, and 1 atomic percentage respectively). We applied indentation to investigate the mechanical performance of the alloys. The deformed areas around the indentation are investigated using the synchrotron x-ray diffraction to map the microstructure distribution of the alloys. After mapping a five by five points,
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16

Dutta, Saikat. "Mapping The Reaction Coordinate For The Oxidative Addition Of Molecular Hydrogen To A Metal Center." Thesis, 2008. https://etd.iisc.ac.in/handle/2005/754.

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The binding of molecular hydrogen to a metal center leads to the elongation of the H−H bond and subsequently to its cleavage along the reaction coordinate for the oxidative addition of H2. There has been considerable interest in the study of the activation of dihydrogen and map out the reaction coordinate for the homolysis of H2 on a metal center. A large number of H2 complexes reported to date possess H−H distances ranging from 0.8 to 1.0 Å. A relatively fewer examples of elongated dihydrogen complexes wherein the H−H distances fall in the range of 1.0 to 1.5 Å, are known. Study of the elonga
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17

Dutta, Saikat. "Mapping The Reaction Coordinate For The Oxidative Addition Of Molecular Hydrogen To A Metal Center." Thesis, 2008. http://hdl.handle.net/2005/754.

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The binding of molecular hydrogen to a metal center leads to the elongation of the H−H bond and subsequently to its cleavage along the reaction coordinate for the oxidative addition of H2. There has been considerable interest in the study of the activation of dihydrogen and map out the reaction coordinate for the homolysis of H2 on a metal center. A large number of H2 complexes reported to date possess H−H distances ranging from 0.8 to 1.0 Å. A relatively fewer examples of elongated dihydrogen complexes wherein the H−H distances fall in the range of 1.0 to 1.5 Å, are known. Study of the elonga
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