Análisis del comportamiento mecánico de bandas de resistencia como sustituto de la piel humana en ensayos mecánicos

Juan Gustavo Diosa; Manuel Antonio Guzmán; Edwin Lenin Chica; Ricardo Moreno

doi:10.17533/udea.rcm.342057

Authors

Juan Gustavo Diosa University of Antioquia
Manuel Antonio Guzmán University of Antioquia
Edwin Lenin Chica University of Antioquia
Ricardo Moreno University of Antioquia

DOI:

https://doi.org/10.17533/udea.rcm.342057

Keywords:

human skin, pig skin, latex resistance bands, tension test, hyperelasticity

Abstract

The skin is a highly anisotropic multilayer tissue, and the analysis of its characteristics has been studied for decades without finding a definitive model. Nowadays, both models and skin substitutes are needed to supply the necessities in surgery simulators, video games, and animation industry. In this study pig skin samples from a local store were used due to the similarities between the pig and human skin. The hypodermis was removed, and the skin was dissected in specimens of approximately 6 mm x 12 mm. The specimens were tested in a Shimadzu AG-X universal testing machine with three replicates. Having as a reference the tests performed to pig skin, latex resistance bands are proposed as mechanical substitute for human skin and its viability is evaluated in this study. Uniaxial tensile tests were carried out to C-type dumbbell specimens according to ASTM D412 standard using seven latex resistance bands (their rigidity are differenced by colors). The constants for Veronda Westman hyperelastic model for both materials were obtained by an optimization process carried out in FEBio Suite. Using the deformation energy as comparative factor, this kind of band could not replace mechanically human skin in assessing scenarios and applications described above.

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Author Biographies

Juan Gustavo Diosa, University of Antioquia

M.Sc., University of Antioquia, Medellín, Colombia.

Manuel Antonio Guzmán, University of Antioquia

M.Sc., University of Antioquia, Medellín, Colombia.

Edwin Lenin Chica, University of Antioquia

PhD., University of Antioquia, Medellín, Colombia.

Ricardo Moreno, University of Antioquia

PhD., University of Antioquia, Medellín, Colombia.

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