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NVH Testing with Innovative Boundary
Conditions
Students in Chuck Van Karsen’s Experimental Vibro-
Acoustics graduate class were given an opportunity
to study a small fiberglass boat equipped with a 90
hp outboard motor that exhibited excessive levels
of vibration at operator interface locations. They
conducted operational testing, modal analysis,
and a path characterization study of the interface
between the hull , motor, and operator. Due to the
timing of the project, the test track at Michigan
Tech was frozen for most of the project. An
innovative boundary condition that simulated the
eff ects of having the boat in water was utilized to
complete the project. |
Orientation of Carbon Nanotubes
Find out more Multi-Scale Technologies Institute |
Orientation
of CNTs Creates Electrical Nanoconnections
Dr. Craig Friedrich and his team are exploring ways in which, using a high frequency electric field, carbon nanotubes(CNTs) can be oriented and deposited to make electrical nanoconnections. Here, two CNTs each 50nm in diameter and shown magnified 60,000 times, bridge a gap of 2 microns connecting gold electrodes. Traditionally, the presence of the CNTs had to be verified by inspection using a scanning electron microscope, as shown here. However, Friedrich’s research has demonstrated that the changing electrical properties of the electrode gap in real time during deposition can be measured verifying the presence or absence of the CNTs without further inspection. |
