Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1675 for “"Melting"”.
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Melting of polymers
… heaters) and viscous heating in the heating (and melting) of low density polyethylene. A model system was used in order to simplify the mathematical analysis. A theory was developed to describe both processes in the model apparatus. The results showed large differences between the experimental and …
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Organic Contaminant Release from Melting Snow
… the behavior of organic contaminants in melting snow laboratory experiments were conducted using artificial snow spiked with the organic target substances naphthalene, phenanthrene, pyrene, benzo(ghi)perylene, lindane, and atrazine. The behavior of those substances during melting is …
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Defect Detection in Selective Laser Melting
… parts produced using selective laser melting (SLM) are prone to defects created during the build process due to part shrinkage while cooling. Currently defects are found only after the part is removed from the printer. To determine whether cracks can be detected before a print is …
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Melting point depression in biodegradable polyesters
… into the crystallisation kinetics and melting point depression of poly(L-lactideco-meso-lactide) with approximately 3.3% D-lactide content (PLA 3051D) was undertaken. The rate of crystallisation was too slow for a crystallisation exotherm to be detected by the DSC, therefore hot-stage …
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Wetting Phenomena Near the Melting Curve
A study of the location of the hard sphere crystal-fluid phase transition and equilibrium wetting states for systems in contact with various hard substrates was undertaken using Monte Carlo (MC) and molecular dynamics (MD) techniques. Through the use of MD the phase transition was found to occur at …
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Mathematical modelling of unsteady contact melting
… in the analysis of an unsteady contact melting process. Chapters 2 and 3 deal with only the heat transfer problem without fluid flow. In Chapter 2 the pre-melting problem is treated. The focus is to obtain the best approximate analytical solution to be used in the melting phase where …
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Effects of flux application and melting parameters in investment casting of pure aluminium by in-situ melting technique
… low pressure and also in-situ casting or in-situ melting techniques to address the porosity problem. However, in-situ melting technique has not been studied to reduce the porosity of the investment cast aluminium due to the oxidation of the granular aluminium occurs during heating hinders the …
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Reuse of steel and aluminium without melting
… focuses on materially efficient reuse without melting. A scoping study of current reuse found three opportunities, an examination of which forms the basis of this thesis: reusing components at end of product life; extending the lifespan of products; and reusing manufacturing scrap. The …
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Crystallization and melting kinetics of germanium dioxide.
Massachusetts Institute of Technology. Dept. of Metallurgy and Materials Science. Thesis. 1969. Sc.D.
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Melting of granite under effective confining pressure.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1967.
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Crystallization and melting kinetics of sodium disilicate.
Massachusetts Institute of Technology. Dept. of Metallurgy. Thesis. 1966. Sc.D.
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Partial melting relationships of three granitic rocks,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1969.
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Packing of particles during softening and melting process.
… pressure, and bed composition (mono - single melting particles, including pure or blend particles vs binary two different melting point particles) on softening deformation are examined. The principal findings of this study are: 1. At low softening temperatures, an increase in load pressure …
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Application of Disorder-Induced Melting Concept to Fracture
… thesis is designed to apply the disorder-induced melting concept to an existing fracture problem: segregation-induced intergranular embrittlement. This is accomplished in the nickel-sulfur system by a comparison of the composition dependencies for polymorphous melting and intergranular fracture. …
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