Browsing Mechanical engineering by Title
Now showing items 1-20 of 431
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1D Model Estimation of Free Surface Location in a Polymer Fiber Drawing Process
A radially lumped and axially differential control volume is used to numerically estimate free surface location in a polymer fiber drawing process. The simplified model will include the effects of temperature-dependent ... -
A 3-dimensional experimental and numerical analysis of the T* E integral in aluminum fracture specimens
(2001)The T*epsilon integral, an elastic-plastic toughness parameter which is based on the incremental theory of plasticity, has been calculated experimentally and numerically in two-dimensional (2-D) metallic specimens. These ... -
3D microscopic imaging with computational image analysis to improve cancer assessment
Non-destructive, slide-free, and comprehensive pathology of clinical specimens can improve clinical workflow efficiency and diagnostic performance. Recent advances in optical-sectioning microscopy and optical clearing ... -
3D-printed Microfluidic Control Systems
Microfluidic devices are tools for manipulating fluids in microchannels to achieve a variety of functions, for instance, sample mixing, analytes testing and detection, dispensing, etc. These functions provided by microfluidic ... -
A Biomechanically and Anatomically Realistic Foot Model (BAREFOOT)
Traditionally, investigators utilize human studies, cadaver studies, and finite element model studies to conduct lower limb biomechanical research. In other realms of biomechanics, a fourth alternative has been recently ... -
A Coronally-Clutching Ankle to Improve Amputee Balance on Coronally-Uneven and Unpredictable Terrain
To improve amputee balance on coronally-uneven and unpredictable terrain, a coronally-clutching ankle (CCA) prosthesis was developed and tested using amputee participants. In its adapting mode, the CCA device enabled free ... -
A Custom Fabricated Low Weight On-Board Vision Sensor for Insect Scale Robot
Controlled flight of insect scale ( 100 mg) Micro Aerial Vehicles (MAVs) has to date required offboard sensors and computation. Achieving autonomy in more general environment will require integrating sensors such as a ... -
A Device for Rapid, Automated Trimming of Insect-Sized Flying Robots
Successful demonstrations of controlled flight in flying insect-sized robots (FIRs) $<$500~mg have all relied on piezo-actuated flapping wings because of unfavorable downward size scaling in motor-driven propellers. In ... -
A Function-Based Approach to High-Precision Volumetric Design and Fabrication
This work addresses the challenges of representing, designing, and interacting with high resolution volumetric models for computer-aided design (CAD) applications by presenting a novel function-based representation (F-rep) ... -
A GPU Accelerated Signed Distance Voxel Modeling System
This dissertation presents the capability of GPU-based parallel computing to support inter- active editing of solids represented by interpolated grids of signed distance values. The basic format of values on a grid is ... -
A Heuristic Optimization Approach to Hydrodynamic Wave Energy Converter Geometry
Ocean waves are an abundant global resource that can be converted to mechanical and electrical power. Modern research on wave energy conversion began in the 1970s, with many types of wave energy converter designs under ... -
A Learning Approach for Extending Human-Robot Collaboration to Manufacturing-Specific Tasks
This thesis presents the development and evaluation of methods for extending shared autonomy to limited-access manufacturing telerobotics. Shared teleoperation has potential to reduce strenuous working conditions and ... -
A Microfabricated Platform for Controlled Drug Release from Conductive Polymer Thin Films
There is great interest in exploring multimodal strategies for the treatment of spinal cord injury (SCI). In animal models of SCI, multimodal treatments combine targeted drug delivery, using the experimental drug, quipazine, ... -
A monolithic compliant microgripper for UW RoboFly
Compliant structures reduce part counts and are easier to assemble at micro and meso- scales ascompared to their rigid counterparts. In this work, we design and prototype in-plane bendable flexures to build a compliant ... -
A Novel Algorithm to Detect and Prevent Slip during Dynamic Object Manipulation using Tactile Feedback
Robotic object manipulation has increased exponentially over the last couple of decades across the field of manufacturing, medical robotics, assistive care and warehousing. Detection and prevention of slip of objects plays ... -
A Novel Framework for GPU-Parallelized Peridynamics with Applications in Nonlinear Elasticity and Topology Optimization
This work focuses on advancing the state-of-the-art of the peridynamic simulation method. Peridynamics is a framework for modelling continuum mechanics, similar to the finite element method (FEM). The peridynamic formulation, ... -
A Novel Process to Create Arbitrary Microcellular Patterns in Polycarbonate using a Laser Beam
Microcellular and nanocellular polymer foams offer a wide range of applications from food safety to aerospace industries. In this work, we introduce a versatile process to nucleate microcells in polycarbonate sheets via ... -
A Novel Walking Cane with Haptic Biofeedback Reduces Degenerative Loading in the Arthritic Knee
Knee osteoarthritis is the most common joint disorder and a leading cause of ambulatory disability in adults. Conservative treatments of osteoarthritis are lacking and the most commonly prescribed mobility aid, the walking ... -
A Passive Pediatric Exoskeleton to Improve the Walking Ability of Children with Neuromuscular Disorders
Children with neuromuscular disorders, such as cerebral palsy (CP) often have walking limitations. Assistive devices for home use, such as walkers and crutches, may not provide optimal participation opportunities or lead ... -
A Quasi-Passive Biarticular Prosthesis and Novel Musculoskeletal Model for Transtibial Amputees
University of Washington Abstract A Quasi-Passive Biarticular Prosthesis and Novel Musculoskeletal Model for Transtibial Amputees Andrea Willson Chair of the Supervisory Committee: Patrick Aubin, Ph.D. Affiliate Assistant ...