Berlin 2005 – wissenschaftliches Programm
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AKB: Biologische Physik
AKB 30: Biomaterials
AKB 30.5: Vortrag
Freitag, 4. März 2005, 18:30–18:45, TU H2013
Influence of Water on the mechanical Properties of wood investigated by X-ray diffraction — •Ingo Grotkopp1, Henrik Lemke1, Klaas Kölln1, Sergio S. Funari2, Martin Domach2, and Martin Müller1 — 1Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel — 2HASYLAB, DESY, Hamburg
The influence of water on the mechanical behaviour of wood is tremendous. Softwood was investigated by means of X-ray diffraction during tensile tests with different moisture contents. In this way, the influence of the water molecules on the changes in the orientation of the cellulose crystals could be observed. A second mechanism found in these experiments is the deformation of cellulose crystals. Here a comparison between single cells, small wood samples and large timber at different humidity is carried out and first conclusions are developed.