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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Effects of core aggregates on white iron casting defects

Blayden, Lee Chandler, January 1965 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1965. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 65-66.
62

Prepress selection of typeface styles and sizes for gravure printing /

Henty, Eric H. January 1993 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1993. / Typescript. Includes bibliographical references (leaf 30).
63

Feeding distance and riser design for manganese bronze

Roberts, Richard Alan, January 1969 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1969. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
64

Solidification modeling of iron castings using SOLIDCast

Muenprasertdee, Piyapong. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2007. / Title from document title page. Document formatted into pages; contains xvi, 222 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 219-222).
65

Rheocasting of aluminium alloys

Park, Sungbae January 2008 (has links)
No description available.
66

Woodrow Wilson's Lasting Impact on the Development of Federal Budget Practice and Theory

Elbert, Tyson Michael 13 December 2014 (has links)
This thesis explores the legitimacy of the academic field of public administration and the subield of public budgeting. The intellectual foundations for each, established largely by the early writings of Woodrow Wilson, are analyzed in order to better understand the ways Wilson influenced and impaired the development of theory and practice of public budgeting at the federal level of American government. The thesis is divided into three parts. The first segment addresses the theoretical frameworks and research methods used throughout. The second segment discusses the impact of Wilson on the founding, growth, and development of public budget theory and practice within the academic institutions of public administration and budgeting. The final segment provides findings and recommendations based on the research. An opportunity emerges for scholars willing to reconsider popular institutional beliefs regarding the legislative and executive branches’ roles when budgeting at the federal level of government.
67

Ductile white cast iron. / 可柔韌的白鑄鐵 / Ductile white cast iron. / Ke rou ren de bai zhu tie

January 2008 (has links)
Ho, Ching Man = 可柔韌的白鑄鐵 / 何靜雯. / Thesis submitted in: November 2007. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves ). / Text in English; abstracts in English and Chinese. / Ho, Ching Man = Ke rou ren de bai zhu tie / He Jingwen. / Chapter Chapter 1: --- Introduction --- p.1 / Chapter 1.1 --- Introduction of Composites --- p.1 / Chapter 1.1.1 --- Dispersion-Strengthened composites --- p.2 / Chapter 1.1.2 --- True Particulate Composites --- p.2 / Chapter 1.1.3 --- Fiber-Reinforced Composites --- p.2 / Chapter 1.1.4 --- Laminar Composites --- p.3 / Chapter 1.2 --- Mechanical Properties of Metal Matrix Composites --- p.4 / Chapter 1.2.1 --- Stress-Strain Test --- p.4 / Chapter 1.2.2 --- "Stiffness, Strength and Ductility" --- p.4 / Chapter 1.2.3 --- Hardness --- p.5 / Chapter 1.3 --- Fabrication of Metal Matrix Composites --- p.5 / Chapter 1.3.1 --- Liquid ´ؤ´ؤ State Processing --- p.6 / Chapter 1.3.1.1 --- Infiltration Processes --- p.6 / Chapter 1.3.1.2 --- Dispersion Processes --- p.7 / Chapter 1.3.1.3 --- Spray Processes --- p.7 / Chapter 1.3.1.4 --- In - Situ Processes --- p.8 / Chapter 1.3.2 --- Solid - State Processing --- p.8 / Chapter 1.3.2.1 --- Diffusion Bonding --- p.8 / Chapter 1.3.2.2 --- Deformation Processing --- p.9 / Chapter 1.3.2.3 --- Deposition Techniques --- p.9 / Chapter 1.4 --- Fabrication of Metal Matrix Composites by Spinodal Decomposition --- p.10 / Chapter 1.4.1 --- Phase Transformation --- p.10 / Chapter 1.4.2 --- Nucleation and Growth --- p.12 / Chapter 1.4.2.1 --- Kinetics of Nucleation and Growth --- p.12 / Chapter 1.4.2.2 --- Phase Separation by Nucleation and Growth --- p.14 / Chapter 1.4.3 --- Spinodal Decomposition --- p.14 / Chapter 1.4.3.1 --- Phase Separation by Spinodal Decomposition --- p.14 / Chapter 1.4.3.2 --- The Diffusion Equation for Spinodal Decomposition --- p.15 / Chapter 1.4.4 --- Methods to obtain large undercooling --- p.17 / Chapter 1.5 --- Aim of This Project --- p.18 / Chapter Chapter 2: --- Experimental --- p.26 / Chapter 2.1 --- Preparation of fused silica tube --- p.26 / Chapter 2.2 --- Preparation of Sample --- p.26 / Chapter 2.2.1 --- Weighing and Alloying --- p.26 / Chapter 2.2.2 --- Fluxing --- p.27 / Chapter 2.3 --- Slow Cooling --- p.28 / Chapter 2.4 --- Microstructure Analysis --- p.28 / Chapter 2.4.1 --- Optical Microscope (OM) Analysis --- p.28 / Chapter 2.4.2 --- Sample Preparation for Scanning Electron Microscope (SEM) Analysis --- p.29 / Chapter 2.4.3 --- Sample Preparation for Transmission Electron Microscope (TEM) Analysis --- p.29 / Chapter 2.4.3.1 --- Specimen Requirement --- p.29 / Chapter 2.4.3.2 --- "Cutting, Grinding and Polishing" --- p.30 / Chapter 2.4.3.3 --- Ion Milling --- p.31 / Chapter 2.5 --- Microstructure Characterization by TEM --- p.31 / Chapter 2.5.1 --- Indexing Diffraction Pattern --- p.31 / Chapter 2.5.2 --- Energy Dispersive X-Rav (EDX) Analysis --- p.32 / Chapter 2.6 --- Mechanical Properties --- p.33 / Chapter 2.6.1 --- Hardness Testing --- p.33 / Chapter 2.6.2 --- Compression Testing --- p.33 / Chapter 2.7 --- Characterizations of Non-spinodal Samples --- p.34 / Chapter Chapter 3: --- Study of the Relationship between Microstructures and Undercooling of Fe81C14Si5 --- p.41 / Chapter 3.1 --- Abstract --- p.41 / Chapter 3.2 --- Introduction --- p.42 / Chapter 3.3 --- Experiment --- p.42 / Chapter 3.4 --- Results --- p.44 / Chapter 3.5 --- Discussion --- p.46 / Chapter 3.6 --- Conclusion --- p.46 / Chapter Chapter 4: --- Ductile white cast iron --- p.56 / Chapter 4.1 --- Abstract --- p.56 / Chapter 4.2 --- Introduction --- p.57 / Chapter 4.3 --- Experimental --- p.58 / Chapter 4.4 --- Results --- p.60 / Chapter 4.5 --- Discussions --- p.66
68

Casting yield improvement in graphitic iron castings.

Hosking, Timothy Donald, mikewood@deakin.edu.au January 2001 (has links)
A well designed runner and feeding system should produce castings with minimal defects and low pour weight. This thesis investigates how the filling regime and solidification of the mould influences defects in the castings produced from that mould. Design guidelines to reduce such defects are proposed and tested. An existing shrinkage fault in a Grey Iron disc brake casting is simulated using a commercial finite-difference computer program. Three criteria are used to predict the defect and the effect of changes to the feeder geometry. Critical Fraction Solidification analysis is used to determine whether the feeder remains in liquid contact with the casting during solidification and this approach is shown to correctly predict the presence or absence of porosity* The feeder block is extended below the ingate of the casting to improve liquid contact between the casting and feeder without significantly increasing the feeder mass. Plant trials confirm the change to the feeder eliminates the porosity defect. The runner system and mould venting for a thin walled Ductile Iron casting are investigated. Trials show that by setting the total mould vent area to be greater than the net ingate area of the castings, the cold-shut frequency is halved. A method for runner system design based on peak linear flow velocity in the runner during mould filling is proposed. A new pressurised runner system produces castings with significantly fewer defects and reduced pour weight when runner areas are designed to maintain peak velocity below 1 m/s. Peak velocity and magnesium levels are demonstrated to be critical factors in the elimination of cold-shut defects. A pressurised runner system is also shown to isolate inclusion defects from castings more effectively than an unpressurised system. From this work, a technique is proposed which allows the yield of an existing runner and feeder system for iron castings to be improved with confidence in the results.
69

Fine particle separation in a riser with flow modifications

Wimer, Bryan M. January 2007 (has links)
Thesis (M.S.)--West Virginia University, 2007. / Title from document title page. Document formatted into pages; contains xi, 133 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 119-120).
70

Analysis of minimum safe cycle time in injection molding selection of frozen layer thickness /

Chang, Keh-Chyou, January 2008 (has links)
Thesis (M.S.)--Ohio State University, 2008. / Title from first page of PDF file. Includes bibliographical references (p. 116).

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