May 24th, 2010

Daniel Short

High-Speed Video Analysis of a Cantilever

A cantilever is a beam that is fixed at one end and free to oscillate on the other end. It is used in an atomic force microscope and a computer hard drive, for example. In this experiment, a cantilever was set up using a long, flat metal beam, and its motion was captured at 1200 fps using high-speed video. The video was analyzed to determine how the frequency of oscillation depends on the length of the beam. In addition, the video was studied to determine the relative contribution of different modes of oscillation to the equation of motion of the beam. In this poster, the high-speed video, the differential equation and solution for the cantilever, and the results of the video analysis will be presented.

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