Dresden 2006 – scientific programme
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AKB: Biologische Physik
AKB 40: Poster Session II
AKB 40.44: Poster
Wednesday, March 29, 2006, 16:30–19:30, P3
Relating microstructure of biomaterials to mechanical properties — •Boris Breidenbach1, Adrian Sheppard2, Ulrike Wegst3, and Klaus Mecke1 — 1Institut für theoretische Physik I, Universität Erlangen-Nürnberg, Staudtstr. 7, 91058 Erlangen — 2Applied Mathematics, Australian National University, Canberra, Australia — 3Max-Planck-Institut für Metallforschung, Heisenbergstr. 3, 70569 Stuttgart
Although biomaterials like wood or nutshells consist mainly of cellulose, they exhibit a broad range of mechanical properties. As woods mainly consist of cellulose, the explanation for this behaviour lies in the microscopic structure of the pore space. We have studied the structure of wood using phase contrast X-ray tomography at a resolution of 0.3µ m to resolve the fibrous structure.
Using parallel implementations of anisotropic diffusion and a region growing algorithm, we can extract the pore space of the 20003 voxel large data sets. For these structures we calculate the Minkowski valuations, a complete set of morphometric tensors which allow for a characterization of anisotropy in materials. The extracted wood structure can also be used to numerically measure the elasticity tensor. The aim is to relate the elastic properties of heterogeneous materials to Minkowski tensors.