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 11 of 11 for “"rapid prototyped"”.
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Fluid Flow Characterization in Rapid Prototyped Common Iliac Artery Aneurysm Molds
<p>The goal of this project was to determine whether i) fused deposition modeling could be employed to manufacture molds for vascular constructs, ii) whether vascular constructs could be created from these molds, and iii) to verify practical equivalence between observed fluid velocities. Dye …
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Analysis and design of rapid prototyped mechanisms using hybrid flexural pivots
… durability of the flexural elements as most rapid prototyping materials are unsuitable in fatigue loading conditions. This thesis work envisions an approach to manufacture hybrid mechanisms that uses i) economic methods like casting and molding (for high volume production) or 3-D printing …
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Fluid Flow Characterization and In Silico Validation in a Rapid Prototyped Aortic Arch Model
<p>Transcatheter aortic heart valve replacement (TAVR) is a procedure to replace a failing aortic valve and is becoming the new standard of care for patients that are not candidates for open-heart surgery [2]. However, this minimally invasive technique has shown to cause ischemic brain lesions, or …
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Fluid Flow Characterization and In Silico Validation in a Rapid Prototyped Abdominal Aortic Aneurysm Model
<p>Aortic aneurysms are the 14<sup>th</sup> leading cause of death in the United States. Annually, abdominal aortic aneurysm (AAA) ruptures are responsible for 4500 deaths. There are another 45,000 repair procedures performed to prevent rupture, and of these approximately 1400 lead to deaths. With …
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Safety First, Bubbles Second: Integrating Regulatory Compliance with Innovation in Rapid Prototyped Focused Ultrasound Devices
… involving 3D-printed materials commonly used in rapid prototyping for FUS research, assessing performance according to established guidance documents and international standards. In this context, materials with favorable acoustic performance did not consistently meet biocompatibility criteria, …
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Design and Development of Single Element Focused Ultrasound Transducers
… induce mechanical tissue destruction. Currently, rapid prototyped histotripsy transducers consist of multiple elements and are made using 3D printing methods. Multi-element transducers introduce size constraints and 3D printing has limitations in material choice, cost, and time for larger scale …
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Effects of Reamer-Femoral Component Offset on Cement Mantle Penetration in Hip Resurfacing Arthroplasty
… best cement penetration into the femoral head. Rapid prototyped femoral component models were produced with reamer femoral component offsets of 0.0 mm, 0.5 mm, and 1.0 mm. After implantation onto models of reamed femoral heads made from high-density open-cell reticulated carbon foam, cement …
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Design and Implementation of a Control System for a Quadrotor MAV
The quadrotor is a 200 g MAV with rapid-prototyped rotors that are driven by four brushless electric motors, capable of a collective thrust of around 400 g using an 11 V battery. The vehicle is compact with its largest dimension at 188 mm. Without any feedback control, the quadrotor is unstable. …
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Mechanical properties of rapid manufacturing and plastic injection molding
As rapid prototyping technology is beginning to transition to rapid manufacturing, it is important to understand how the performance of a part created using rapid prototyping compares to a part created using traditional methods. This paper compares the results of dimensional accuracy, tensile …
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Evaluating the Aerodynamic Performance of MFC-Actuated Morphing Wings to Control a Small UAV
… a morphed airfoil and a flapped airfoil were rapid prototyped and tested to isolate<br />the effects of discontinuity. The continuous morphed airfoil produced more lift with less<br />drag.<br />The second half of this thesis work focused on determining the ideal MFC configurations for<br />a …
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A Review of Anthropomorphic Robotic Hand Technology and Data Glove Based Control
For over 30 years, the development and control of anthropomorphic robotic hands has been a highly popular sub-discipline in robotics research. Because the human hand is an extremely sophisticated system, both in its mechanical and sensory abilities, engineers have been fascinated with replicating …