Jörg Wehsener

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Heat-treatments of wood to improve selected wood properties, e.g. durability and dimensional stability, are well established industrial processes. However, the main drawbacks of thermally modified timber are the reduced strength properties. In a previous study, thermo-mechanically densified wood with increased initial strength was successfully applied to an(More)
Fichtenkantholz wurde unter geringem Druck bei einer Temperatur von 140°C auf einer Mehretagenpresse senkrecht zur Faser auf 50% des Volumens verdichtet, wobei der Prozess in drei Stufen erfolgte: Erhitzen, Verdichten, Rückkühlen. Die mechanischen Eigenschaften des Pressholzes wurden anschließend an fehlerfreien Kleinproben ermittelt. Es hat sich gezeigt,(More)
The thermo-mechanical densification of wood leads to new material characteristics with a plasticity of more than 50 %. The compression process can be influenced by different material and process parameters. By subsequent thermo-hydro-mechanical forming, production of three-dimensional structures is viable. Additional textile reinforcement can increase the(More)
Acetylated wood made from radiata pine (Pinus radiata D. Don) was densified at different temperatures in order to investigate its applicability to wood moulding. Six different densification levels ranging from 10 to 60% were carried out each at the temperature levels 80 and 110 °C. The swelling behaviour in cold (20 °C) and warm (60 °C) water and(More)
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