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 18 of 18 for “"CAD design"”.
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A New CAD Design Framework
… transaction manager and log manager to help the design. The log manager can save intermediate results to lessen the intense workload of the blackboard in Cadweld. The multilevel transaction manager can help to solve the problem of calling nested tools without going through the blackboard which …
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Microwave frequency discriminators using GaAs fet sloped amplifiers
A systematic design procedure for a GaAs FET discriminator (sloped) amplifier that is used for direct microwave frequency discrimination has been developed. Active type discriminators have several advantages over the passive interferometer type which has a limited accuracy. Their discrimination …
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A Computational Fluid Dynamics Study on the Aerodynamic Performance of Ram-Air Parachutes
… This thesis presents the development of a CAD design and CFD methodology to the simulation of ram-air parachutes in steady-state conditions. Starting from a 2D rib drawing, methods were developed to approximate the 3D geometry and efficiently model the parachute as a rigid and impermeable …
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Defect detection using 3D computed tomography images and application on nuclear power plants
… image registration process and Computer-aided design (CAD) design files. The annotated data is then used to train a deep learning-based semantic segmentation model to segment each component of the tool in the CT data.
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Design, Development, and Testing of Research Payloads on Various Suborbital Flight-Test Platforms
… tackle some of these challenges by detailing the design, development, and testing techniques followed in the successful launch and recovery of payload experiments in currently active and upcoming suborbital launch vehicles. The research methodology involves collecting payload requirements, CAD …
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TIPPS, a totally integrated process planning system
… is an essential interface between computer-aided design and computer-aided manufacturing. In this thesis, a computer-aided process planning system - TIPPS is developed. A CAD design model is used for direct input in the TIPPS system. A boundary internal model of the engineering part drawing is …
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Computer-aided design-based project management model
… practice, information is exchanged between the designers and contractors in the form of paper documents such as drawings, bills of material and specifications. Information is lost and errors are made during the forward and backward exchange of the design-construction information and …
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Method for acute Neuropixels probe recordings in non-human primates
… areas for microelectrode recordings are not designed to accommodate NP probes, and (2) NHPs have thick dura mater and tissue growth within the cephalic chambers which poses a challenge for insertion of the extremely fragile NP probe. In this study we present a novel Neuropixels guide tube …
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Preliminary Test Predictions for Scale Ram-Air Parachute Testing
… to resolve the canopy geometry. Therefore, a CAD geometry generation is implemented for flexible control of the canopy structure by implementing design parameters, e.g., chord, span and planform shape. Distortions caused by inflation and suspension line tensions on the canopy structure are …
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An integrated system to design machine layouts for modular special purpose machines
… the development of an integrated system for the design of layouts for special purpose machines (SPMs). SPMs are capable of performing several machining operations (such as drilling, milling, and tapping) at the same time. They consist of elements that can be arranged in different layouts. Whilst …
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Design and fabrication of an underwater digital signal processor multichip module on low temperature cofired ceramic
… Processor (UDSP) multichip module (MCM) was designed and fabricated according to specifications outlined by the Naval Surface Warfare Center (NSWC), Dahlgren Division. Specifications indicated that low temperature cofired ceramic (L TCC) technology be used to fabricate the MCM with surface …
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Virtual topology based hex-dominant meshing and re-meshing
… used in various industries to support the design of complex systems and validate their performance by simulating their physical behaviour. This created a need to generate fit-for-purpose analysis models with a turnaround time comparable to the time required to generate the design model. …
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Evaluation of printing orientation, layer thickness and auxilary cross-arch bar in 3-dimensional dental printing on the trueness and precision of full arch polymeric fixed dental prostheses
… Digital IPN™ and OnX Tough 2. A standardized CAD design generated in Dental CAD 3.1 Rijeka software was exported as an STL file and served as the reference model. A total of 104 specimens were printed with Carbon M2 printer at varying angulations (0°, 40°, and 70°), layer thicknesses (25 µm …
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Graphene Nanotechnology the Next Generation Logic, Memory and 3D Integrated Circuits
… we present a new floating gate transistor (FGT) design based on multilayer graphene nanoribbon (MLGNR) and carbon nanotube (CNT). In the proposed graphene based floating gate transistor (GFGT) a multilayer structure of graphene nanoribbon (GNR) would be used as the channel of the field effect …
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Understanding the role of generative design in undergraduate students' design thinking
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01
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Preclinical Evaluation of 3D Printed Biomaterials for Repairing Critical-Size Bone Defects
… using autologous bone (autograft) or banked cadaveric bone (allograft) has been considered the standard of care for decades, both come with significant attendant risks and limitations. Commercially available bone substitute materials overcome some of these challenges but do not necessarily …
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A Framework for Building Assembly Selection and Generation
In practice, the building design process can be divided into three major stages; schematic design, design implementation and construction documents development. The majority of the time in the building design delivery process is spent in the latter two stages. Computers can greatly aid the designer …