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 10 of 10 for “"direct metal laser sintering"”.
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Development of low alloy steel by direct metal laser sintering
… A general corrosion study is conducted on direct metal laser sintered parts in order to evaluate the factors which lead to corrosion. The main objectives of this effort are to produce mechanical properties of steel that are comparable to wrought 4340 and to understand the factors which …
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Direct Metal Laser Sintering of Titanium implant with Tailored structure and Mechanical Properties
Direct Metal Laser Sintering has attracted much attention over the last decade for producing complex parts additively based on digital models. The capability and reliability of this process has stimulated new design concepts and has widened the manufacturing perspective of product customisation. …
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Exploration of metal 3-D printing technologies for the microfabrication of freeform, finely featured, mesoscaled structures
This thesis investigates a mainstream metal 3-D printing technique (i.e., direct metal laser sintering of stainless steel {SS} 316L) and two relatively new metal additive manufacturing methods (i.e., lost-wax casting of sterling silver using stereolithography-printed wax masters, and binder inkjet …
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Development and Prototype Validation of an Additive Manufactured Cubesat Propulsion Tank
… using the additive manufacturing technology of direct metal laser sintering meets the requirements, and material properties of a conventionally manufactured tank. Additionally, to see if additive manufactured parts are a viable option to be used in cubesat applications. This was accomplished by …
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Phononic materials as ultrasonic filters in nondestructive evaluation measurements
… harmonic. Phononic filters were fabricated with direct metal laser sintering, and experimentally characterized in the ultrasonic regime. Results show that the filters behave as passive low-pass filters, mitigating transmission above an ultrasonic cut-off frequency by four orders of magnitude. …
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Nanoindentation of copper covetics and the mechanical testing and microstructural imaging of additive manufactured Inconel 718
There have been large developments in metallic material systems over the past century. The mechanical properties of metals have been manipulated by varying the composition of alloys. In this thesis we characterize two metal-based metallic systems: novel metal carbon materials (covetics) and …
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Characterizing the tensile behavior of additively manufactured Ti-6Al-4V using multiscale digital image correlation
… (DIC) techniques. Ti-6Al-4V is one of the AM metals that is currently commercially available for use in a variety of engineering applications. This work focuses on characterizing the relationship between the microstructure and bulk mechanical properties of the AM Ti-6Al-4V specimens and …
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Application of 3D printing in medical devices New Product Development
… Printing to reduce time to market include: using Direct Metal Laser Sintering (DMLS) for improved injection molding tooling; increasing developer access to local 3D Printing technologies; establishing decision rules to determine appropriate investment in new technology; using polymer 3D Printed …
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Analysis and design of rapid prototyped mechanisms using hybrid flexural pivots
… systems are manufactured from high performance metals such as stainless and alloyed steel or aluminum alloys for high material performance and durability. Functional requirements such as high bandwidth, accuracy performance and geometric complexity require them to be manufactured as monolithic …
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Návrh 3D tištěné CubeSat struktury pro misi KOSTKA
… technologií aditivní výroby - selektivního laserového tavení (SLM) a přímého laserového spékání kovů (DMLS) - si tato práce klade za cíl optimalizovat strukturu CubeSatu zvý- šením strukturální integrity, snížení hmotnosti a vyhovění standardům a požadavkům. Proces návrhu zahrnoval …