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 6 of 6 for “"Ceramic cores"”.
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Economic Analysis of 3D-Printed Ceramic Cores for GasTurbine Investment Castings
… formed by investment casting with sacrificial ceramic cores. The hot injection and pressing techniques traditionally used to manufacture ceramic cores have long lead times and high up-front costs, motivating an interest to form cores via additive manufacturing. While industrial additive …
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Experimental analysis of natural gas transport: using nanoporous ceramic cores as mimetic model for low permeability reservoirs.
This research investigates the use of nanoporous ceramic cores as mimetic models for studying natural gas transport in low permeability reservoirs. Low permeability reservoirs, such as tight sands, coalbed methane and shale gas formations, present significant challenges for natural gas extraction …
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Survival rate and fracture strength of endodontically treated crowned maxillary incisors with severe defects, restored with different post and core systems after exposure to the artificial mouth.
… (Control group I), titanium posts and composite cores (Test group II), zirconium posts with composite cores (Test group III), zirconia posts and heat pressed glass ceramic cores (Test group IV). All the posts were adhesively luted using a resin cement. All the samples received full coverage metal …
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Towards inert cores for investment casting
… These blades are cast from specialized alloys in ceramic moulds which employ internal ceramic cores. One way in which the blades can be made more resistant to corrosion is by the inclusion of low levels of reactive metal elements such as yttrium and lanthanum in the blade alloy. During casting …
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Understanding surface and sub-surface phenomena in nickel-based superalloy castings
… a systematic investigation of the silica-based ceramic cores used to form the cooling passage to better understand core / casting interactions. The silica-based core displayed a degree of pressure assisted liquid phase sintering at those locations where the nickel-based superalloy exerted a …
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Numerická simulace výroby keramických jader pro technologii lití na vytavitelný model
Cílem diplomové práce je validace numerické simulace výroby keramických jader pro metodu lití na vytavitelný vosk. První část práce se zabývá teoretickým popisem výroby keramických jader a popisem základních principů numerických simulací. Druhá část práce porovnává video záznam plnění dutiny formy …