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Contact

Martin Dressler room EMPA BA 200.3
PhD student tel +41 44 823 4790
  fax +41 44 823 4020
  email martin.dressler@empa.ch

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Profile

Martin Dressler received his Dipl.-Ing. (M.Sc.) degree in ceramics-, glass and building materials from the Technical University TU-Bergakademie Freiberg (Germany) in 2003. After graduation he started working as a PhD student at the Federal Institute for Materials Research and Testing (BAM) in Berlin. After receiving his PhD in 2006 – dealing with thin ceramic alumina coatings for turbine blade materials – he continued his work in the field of advanced ceramics at the laboratory “Bioma-terials and Implants” at BAM. During this time as a post-doc research fellow he worked in the field of advanced processing technologies for bioceramic materials being used as temporary bone re-placement materials. After this initial contact with the intricate field of the mechanical behaviour of hierarchically structured natural materials – like e.g. bone – he his now with the “Building Physics” department of EMPA, working on the mechanical behaviour of another hierarchically structured material, i.e. wood.


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PhD: Modelling of mechanical behaviour of water loaded wood

Since the beginning of mankind wood has been used for a multitude of different purposes. One of the most important being its application as building material. Even nowadays – were materials like concrete, steel and glass have allowed major advances in building technology and architecture – wood is widely applied not even for decorative purposes but also as a construction material. Due to its widespread use, wood has been the subject of detailed investigations ever since. With the pro-gress in other sciences, i.e. physics, numeric- and computer-sciences, the numerical solution of complicated coupled problems is now feasible.

The main topic of the thesis will be the description of the macroscopic mechanical behaviour of wood which is not merely in its dry state, but which has different levels of water loading. It is the aim of this thesis to study the influence of water on a variety of mechanical problems using a macroscopic thermodynamic approach. Based on measurements on actual wood samples suitable parameters are to be generated in order to validate the model. On the basis of that approach this pro-ject also aims at contributing to the understanding of the mechanical behaviour of wood as a hierar-chically structured material.


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Publications

Journal papers

  • M. Nofz, J. Pauli, M. Dressler, Ch. Jäger, W. Altenburg: 27Al NMR study of Al-speciation in aqueous alumina-sols. J. Sol-Gel Sci. Technol. 38 (2006) 25-35
  • M. Dressler, M. Nofz, M. Gemeinert: Rheology, UV-vis transparency and particle size of modified Yoldas sols. J. Sol-Gel Sci. Technol. 38 (2006) 261-269
  • M. Dressler, M. Nofz, F. Malz, J. Pauli, C. Jäger, S. Reinsch, G. Scholz: Aluminium speciation and thermal evolution of aluminas resulting from modified Yoldas sols. J. Solid State Chem. 180 (2007) 2409-2419
  • M. Dressler, M. Nofz, R. Saliwan-Neumann, I. Dörfel, M. Griepentrog: Sol-Gel derived alumina layers on nickel-base superalloy Inconel-718. Thin Solid Films 517 (2008) 786–792
  • M. Dressler, M. Nofz, J. Pauli, C. Jäger: Influence of Polyvinylpyrrolidone (PVP) on alumina sols prepared by a modified Yoldas pro-cedure. J. Sol-Gel Sci. Technol. 47 (2008) 260-267
  • M. Dressler, M. Nofz, I. Dörfel, R. Saliwan-Neumann: Influence of sol-gel derived alumina coatings on oxide scale growth of nickel-base superalloy IN-718. Surf. Coat. Technol. 202 (2008) 6095-6102
  • M. Dressler, M. Röllig, M. Schmidt, A. Maturilli, J. Helbert: Temperature distribution in powder beds during 3D printing. accepted for Rapid Prototyping Journal (2009)
  • M. Dressler, M. Nofz, P. Klobes, I. Dörfel, S. Reinsch: Differences between films and monoliths of sol-gel derived aluminas. submitted to Thin Solid Films (2009)
  • M. Dressler, S. Reinsch, R. Schadrack, S. Benemann: Burnout behavior of ceramic coated polyurethane (PU) sponges. J. E. Ceram. Soc. 29 (2009) 3333 – 3339.

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