Sökning: "träslag"

Visar resultat 1 - 5 av 10 avhandlingar innehållade ordet träslag.

  1. 1. Detection of glue deficiency beneath a thin layer of laminated wood using thermography

    Författare :Henrik Berglind; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träteknik; Wood Technology;

    Sammanfattning : Denna avhandling presenteras i form av en monografi bestående av en teoridel och en experimentell del. Syftet med teoridelen är att ge en samlad bild av hur de termiska fenomen som förekommer inom termografi teoretiskt kan beskrivas samt hur olika faktorer påverkar resultaten vid en termografisk mätning. LÄS MER

  3. 2. Water resistance of Scots pine joints produced by linear friction welding

    Författare :Mojgan Vaziri; Lars-Olof Nilsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wood; wood welding; crack; CT scanning; image processing; MRI; microdensitometry; CPMAS C NMR; density; water absorption; tensile-shear strength; Träteknik; Wood Technology;

    Sammanfattning : Wood welding is a mechanical friction process allowing the assembly of timber without any adhesives. The process consists of applying mechanical friction, under pressure, alternately to the two wood surfaces to be welded. LÄS MER

  4. 3. Characterization, toxicity and treatment of wood leachate generated outdoors by the wood-based industry

    Författare :Henric Svensson; Linnéuniversitetet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Wood leachate; Log yard runoff; Stormwater; Toxicity; Artemia salina; Vibrio fischeri; Constructed wetlands; Forestry and Wood Technology; Skog och träteknik;

    Sammanfattning : Wood is a natural raw material, and would hardly be considered a risk to the environment. However, the handling of wood materials on an industrial scale has been shown to have a negative impact on water bodies that run-off from industrial sites that process wood-based materials. LÄS MER

  5. 4. Chemical Interactions between Fatty Acids and Wood Components during Oxidation Processes

    Författare :Alireza Salehi M.; Mats K G Johansson; Gunnar Hemriksson; Heikki Tenhu; KTH; []
    Nyckelord :;

    Sammanfattning : Fatty acids auto-oxidation on wood is proposed to follow a complex free radical interaction mechanism. The aim of this study was to analyze the effect of wood constituents on oxidation of fatty acids and thereby the entire drying process, and to characterize the fatty acids-wood interaction by using analytical instruments such as RT-IR and NMR. LÄS MER

  7. 5. Characterization of sawlogs using industrial X-ray and 3D scanning

    Författare :Johan Skog; Olav Höjbö; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träteknik; Wood Technology;

    Sammanfattning : In the Nordic countries, sawlogs are typically sorted upon arrival at the sawmill based on species and dimension. By processing batches of logs with similar size, the sawing process becomes more efficient; the need to change sawing pattern between individual logs is reduced, and the handling of sawn goods is simplified, since the number of different dimensions produced simultaneously decreases. LÄS MER