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Portable sensor to measure the mechanical compliance transfer function of a material

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Portable sensor to measure the mechanical compliance transfer function of a material

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Author: Post, Ethan A. (Ethan Adam)
Other Contributors: Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Advisor: Ian W. Hunter.
Department: Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Publisher: Massachusetts Institute of Technology
Date Issued: 2006
Abstract:
A device that can measure the dynamic compliance of a material has applications for research, health sciences and for use as a pedagogical tool. A device was created which stochastically perturbs a material while measuring the resulting forces and displacements. A software program then creates a non-parameterized impulse response function in addition to a fit second order model for the material. The device was tested on a compliant sponge sample which exhibited highly nonlinear dynamic behavior. The low frequency compliance of the sponge was measured with the device with 16% to 31% error. Improvements for further dynamic testing on the sponge are presented as well as future improvements to the design of the device.
Description:
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.Includes bibliographical references (leaves 35-36).
URI: http://hdl.handle.net/1721.1/36714
Keywords: Mechanical Engineering.

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