Linear viscoelastic material parameters of porcine brain tissue and two brain substitute materials for use in mechanical head models (edible bone gelatin and dielectric silicone gel) were determined in small deformation, oscillatory shear experiments. Frequencies to 1000 Hertz could be obtained using the Time/Temperature Superposition principle. Brain tissue material parameters (i.e., dynamic modulus (phase angle) of 500 (10°) and 1250 Pa (27°) at 0.1 and 260 Hz, respectively) are within the range of data reported in literature. The gelatin behaves much stiffer (modulus on the order of 100 kPa) and does not show viscous behavior. Silicone gel resembles brain tissue at low frequencies but becomes more stiffer and more viscous at higher frequencies (dynamic modulus (phase angle) 245 Pa (7°) and 5100 Pa (56°) at 0.1 and 260 Hz, respectively). Furthermore, the silicone gel behaves linearly for strains up to at least 10%, whereas brain tissue exhibits nonlinear behavior for strains larger than 1%.


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    Titel :

    Comparison of the Dynamic Behavior of Brain Tissue and Two Model Materials




    Erscheinungsdatum :

    1999



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch



    Comparison of the Dynamic Behaviour of Brain Tissue and Two Model Materials

    Brands, D. W. A. / Bovendeerd, P. H. M. / Peters, G. W. M. et al. | British Library Conference Proceedings | 1999


    Comparison of the dynamic behaviour of brain tissue and two model materials

    Brands, D.W.A. / Bovendeerd, P.H.M. / Peters, G.W.M. et al. | Tema Archiv | 1999


    Comparison of the dynamic behaviour of brain tissue and two model materials

    Brands,D.W. / Bovendeerd,P.H. / Peters,G.W. et al. | Kraftfahrwesen | 1999


    The large shear strain dynamic behavior in in-vitro porcine brain tissue and a silicone gel model material

    Brands,D.W. / Bovendeers,P.H. / Peters,G.W. et al. | Kraftfahrwesen | 2000


    The Large Shear Strain Dynamic Behavior of In-Vitro Porcine Brain Tissue and a Silicone Gel Model Material

    Brands, D W A. / Eindhoven University of Technology | SAE Technical Papers | 2000