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Porcine dermis in
uniaxial cyclic loading: Sample preparation, experimental
results and modeling
Alexander E. Ehret, Marc Hollenstein, Edoardo Mazza and Mikhail Itskov |
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Vol. 6 (2011), No. 7-8, 1125–1135
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Abstract |
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We present a straightforward technique to prepare thin samples of planar or bulky soft tissue with very accurate geometry. The experimental procedure includes the preparation of thin slices of tissue by means of a surgical dermatome and specimen extraction by die cutters. We illustrate this method in application to porcine dermal tissue. The prepared specimens were subjected to uniaxial cyclic tension along and across the lines of cleavage with increasing upper stretch limits. Besides a distinct anisotropic and nonlinear behavior, cyclic loading caused considerable preconditioning effects including softening and substantial residual deformations. This observed behavior is well represented by a recently proposed constitutive model accounting for the elastic and dissipative behavior of soft tissues. |
Keywords
dermis, anisotropy, constitutive modeling, preconditioning,
soft tissues, mechanical testing, cyclic loading
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Milestones
Received: 1 July 2010
Revised: 10 December 2010
Accepted: 10 January 2011
Published: 21 December 2011
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Authors |
| Alexander E. Ehret | |
| Department of Continuum
Mechanics RWTH Aachen University 52056 Aachen Germany |
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| Marc Hollenstein | |
| Institute for Mechanical
Systems ETH Zurich 8092 Zurich Switzerland |
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| Edoardo Mazza | |
| Institute for Mechanical
Systems ETH Zurich 8092 Zurich Switzerland |
EMPA 8600 Dübendorf Switzerland |
| Mikhail Itskov | |
| Department of Continuum
Mechanics RWTH Aachen University 52056 Aachen Germany |
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