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 15 of 15 for “"Additive manufacture"”.
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Computer-Generated Holography for Areal Additive Manufacture
With a market of approximately $10B, additive manufacture (AM) is an exciting next-generation technology with the promise of significant environmental and societal impact. AM promises to help reduce emissions and waste during manufacture while improving sustainability. Widely used in applications …
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Thermo-mechanical characterisation of energetic materials for additive manufacture
This thesis presents an investigation of the additive manufacture of energetic materials such as polymer bonded explosives and composite propellant. The work focuses on the use of extrusion methods to print the materials as uncured pastes comprising a high volume fraction of solid energetic …
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High speed mask-less laser-controlled precision micro-additive manufacture
A rapid, mask-less deposition technique for writing metal tracks has been developed. The technique was based on laser-induced chemical vapour deposition. The novelty in the technique was the usage of pulsed ultrafast lasers instead of continuous wave lasers in pyrolytic dissociation of the chemical …
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Direct-Write Electrospinning of Highly-Loaded Ceramic Slurries for Additive Manufacture
… but they can be difficult to form and process. Additive manufacture is increasingly being explored for producing ceramic parts without moulds. In this work, a method for controllably patterning filaments containing high volume fractions of ceramic particles was explored, using electrospinning as …
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Additive manufacture of dissolvable tooling for autoclave processing of fiber reinforced polymer composites
… made from these materials can be costly to manufacture and are not suitable for low volume production runs. This is especially true for complex geometries in trapped tooling situations where the cured composite shape prevents tool separation. In this situation, composite manufacturers rely …
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Additive Manufacturing of Electrical Machines and Electronic Devices
Recent advancements in the additive manufacture of electronics and electrical machines have led to successful demonstrations of 3D-printed passive (e.g., resistors, capacitors, inductors) and active (e.g., transistors) electronic components, as well as magnetic cores and power transfer devices. …
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Material Corrosion by Nuclear Reactor Coolants
… materials for accident tolerant fuel (ATF) and additive manufacture (AM) Ni-based alloy were studied in water coolants. Similarly, the ATF material and Ni-based alloys were also examined under high-temperature steam to understand the corrosion behavior in beyond design basis accident (BDBA) …
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Reverse engineering of obsolete components for realisation using additive manufacturing
Additive manufacturing (AM), or 3D printing as it also known, is a technique used for the direct manufacture of parts, one which is becoming more accessible to not just engineers in industry, but also non-technical users with minimal technical knowledge or experience. The aim of the research was …
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Step-Stress Fatigue, Fracture Toughness and Load to Failure of an Additively Manufactured Ceramic Filled Hybrid Crown Material
… practice is toward fully digital workflows with additive and subtractive manufacturing. Computer Aided Design Computer Aided Manufacturing (CADCAM) and subtractive manufacturing have led to a proliferation of established restorative materials. In September 2021, the FDA approved Varseosmile Crown …
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Thermoelectric Energy Harvesting for Sensor Powering
… Thus selective laser melting, a high-temperature additive manufacture method, was proposed for the fabrication. A model was built based on the continuous equations to guide the selective-laser-melting manufacturing of thermoelectric material with other nanoparticles mixed for high thermoelectric …
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Integration of substrate in aluminium wire and arc additive manufacturing
Integrating wrought alloys into a wire and arc additively manufactured component is very beneficial in order to reduce the duration and cost of deposition. However the microstructure and therefore mechanical properties of the wrought and deposited materials will be different. This thesis reports on …
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Polyethylene-Based Multifunctional Composite Material for Radiation Shielding, Passive Thermoregulation, and In-Situ Fabrication for Space Exploration
… of the thesis addresses the feasibility of additive in-situ fabrication via fused deposition modeling (FDM). Due to the difficulties of FDM printing polyethylene, the development of reliable printing approaches has been shown to be a challenging task. In the thesis, a reliable printing …
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Creation of controlled polymer extrusion prediction methods in fused filament fabrication. An empirical model is presented for the prediction of geometric characteristics of polymer fused filament fabrication manufactured components
… draws on previous literature in the fields of additive manufacturing, machine engineering, tool-path programming, polymer science and rheology. Combining these research fields has allowed for an understanding of the FFF process which has been presented in its simplest form allowing FFF users of …
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Patterning temporally dynamic 4D hydrogel and nanocomposite material gradients: predictive cellular and actuator responses
Direct-Ink Writing (DIW) is a facile form of additive manufacturing that elevates three-dimensional (3D) printed structures into materials regimes whose chemistries enable them to be temporally dynamic (4D). A series of dynamic material systems is prepared that applies DIW methodologies and design …