A numerical-experimental method for a mechanical characterization of biological materials

C.W.J. Oomens, M.R. van Ratingen, J.D. Janssen, J.J. Kok, M.A.N. Hendriks

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38 Citations (Scopus)
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Abstract

For the determination of material parameters, it is a common practice to extract specimens with well-defined geometries. The design of the samples and the choice of the applied load are meant to lead to a homogeneous stress and strain distribution in a part of the sample. When applied to biological materials, this raises a number of problems: homogeneous strains cannot be obtained because the materials have inhomogeneous properties, and the manufacturing of samples is hard or sometimes impossible. In this technical note a different approach is presented, based on the use of a digital image technique for the measurement of nonhomogeneous strain distributions, finite element modeling and the use of a minimum-variance estimator. The method is tested by means of experiments on an orthotropic elastic membrane of a woven and calendered textile. Five parameters are identified using the experimental data of one single experiment.
Original languageEnglish
Pages (from-to)617-621
JournalJournal of Biomechanics
Volume26
Issue number4/5
DOIs
Publication statusPublished - 1993

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