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Design And Development Of A Transhumeral Prosthetic Mounting System, Michael Bertini, Zachary Dominguez, Joshua Morin, Elizabeth Palumbo Apr 2006

Design And Development Of A Transhumeral Prosthetic Mounting System, Michael Bertini, Zachary Dominguez, Joshua Morin, Elizabeth Palumbo

Assistive Technology Resource Center Projects

For those with amputations, prostheses are important tools which are needed to perform many activities of daily living. Ideally, a prosthesis enables the user to perform activities with the same freedom as a physically able person. For those with trans-humeral amputations, however, effective prosthesis use is often hindered by the complexity of the glenohumeral joint. Current methods of prosthesis attachment for those with trans-humeral amputations severely limit load bearing capability. The goal of this project was to design, analyze, manufacture, and test a device that increases current axial and torsional load bearing capability without limiting the range of motion in ...


Flexible Tools For Specifying Design Variation, Trichy Pasupathy, Xiaoping Zhao, Robert Wilhelm Apr 2006

Flexible Tools For Specifying Design Variation, Trichy Pasupathy, Xiaoping Zhao, Robert Wilhelm

Mechanical & Materials Engineering Faculty Publications

This paper describes flexible tools for specifying design variations that are based on nonuniform profile tolerance definitions. These tools specify bounds of design performance that can be used for negotiation among engineers in a collaborative design process. These specification methods allow for the capture of many different design functions that are not easily described with current tool designs. In addition, these specification methods lend themselves to efficient verification methods. Profile tolerance definitions provide the most general variation controls for complex mechanical surfaces. Common design practices and engineering standards for profile tolerances exhibit many weaknesses and limitations. We present a rationale ...


Techniques In The Design Of Thermomechanical Microactuators, Larry L. Howell, Timothy W. Mclain, Michael S. Baker, Christian D. Lott Jan 2006

Techniques In The Design Of Thermomechanical Microactuators, Larry L. Howell, Timothy W. Mclain, Michael S. Baker, Christian D. Lott

Faculty Publications

The purpose of this chapter is to provide fundamental background for the design of thermomechanical microactuators. Actuation has been a particularly challenging aspect of microsystem development. Many actuation approaches used at the macro level, such as hydraulics, pneumatics, electric motors, internal combustion engines and turbines, are either too difficult to fabricate at the micro level or do not work well at that scale. Electrostatic attraction is one approach that has been widely used for actuation of microsystems; however, electrostatic actuators tend to have high voltage requirements and low output force capabilities. While electrostatic actuation is suitable for many applications, some ...