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RESEARCH PAPERS

An In-Vivo Measurement and Analysis of Viscoelastic Properties of the Spinal Cord of Cats

[+] Author and Article Information
Guan-Liang Chang, Tin-Kan Hung

Departments of Civil Engineering and Neurosurgery, University of Pittsburgh, Pittsburgh, PA 15261

William W. Feng

Lawrence Livermore Scientific Laboratory, Livermore, CA 94550

J Biomech Eng 110(2), 115-122 (May 01, 1988) (8 pages) doi:10.1115/1.3108415 History: Received January 21, 1987; Revised March 01, 1988; Online June 12, 2009

Abstract

An in-vivo experimental technique was employed to determine the linear and nonlinear characteristics of viscoelastic properties of the spinal cord of anesthetized cats. The stress relaxation and recovery curves were reproducible in a group of cat experiments. The data of linear viscoelastic properties were used to develop a power law model with Boltzmann’s convolution integral. The model was capable of predicting a prolonged stress relaxation and recovery curve. For larger deformation, the results were quantified using a nonlinear analysis of viscoelastic response of the spinal cord under the uniaxial experiment.

Copyright © 1988 by ASME
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