Download 2011 Michigan Tech Undergraduate Expo PDF

Senior Design
110
Conformal Cam Follower Design
111
Electric Park Brake Design
112
Instrumentation for Quantitatively
Assessing Tremors
An example of adhesive wear caused by Hertzian
contact stresses (top left); a roller follower
in contact with a camshaft (bottom left); the
stress distribution at the roller-to-cam interface
simulated using finite elements (middle right).
Team Members
Michael Rademacher, Brian Sollars, Skyler Teske,
Jiongxun Zhang, and Venkatesh Shetty, Mechanical
Engineering
Advisor
Dr. Gregory Odegard
Sponsors
Oliver Bouthier and Carl Musolff, Cummins Mid-
Range Applied Mechanics
Project Overview
In the ISX 15.0-liter diesel engine, Cummins
currently utilizes a convex-to-convex interface
between roller followers and cams. The advantage
of this design lies in the fact that high stress, due
to edge contact, is eliminated. However, the small
point of contact at this interface creates high
Hertzian stresses. The project investigates the
possibility of using a more conformal convex-toconcave
interface. Theoretically, this design will
create a larger area of contact between the rollers
and cams and, therefore, reduce Hertzian stress.
Motor on caliper 3-D CAD model
Team Members
BShiran Chen, Joshua Howell, Fei Pi, and Jeff Rice,
Mechanical Engineering; Brian Thompson and
Jared Helminen, Electrical Engineering
Advisor
Dr. John Beard, Mechanical Engineering-
Engineering Mechanics
Sponsor
HB Performance Systems Inc.
Project Overview
Design an electric parking brake—to replace the
cable-driven parking brake—on Harley Davidson
Tri-Glide and Can-Am Spyder three-wheel
motorcycles.
An instrument for quantitatively assessing tremors
of the hands
Team Members
Cody Alger, Jacob Gombar, Daniel Hirst, Michael
Hulway, and Amy Saelen, Biomedical Engineering
Advisor
Dr. Keat Ghee Ong
Sponsor
Department of Biomedical Engineering
Project Overview
Currently there is no effective way to quantify the
magnitude and frequency of essential tremors in
the hands. Therefore, the goal is to design and
build a device that quantitatively assesses these
variables. This device must be able to record
the frequency and magnitude of the tremor, with
minimal interference from outside factors, while
remaining cost-effective. In addition, this device
must have a high level of precision and accuracy
so the results can be compared to previous trials
to determine trends in tremor behavior—as well
as help determine whether specific treatments are
having measurable effects in reducing the tremor.
Senior Design 2011 • 9