Sökning: "Träfysik"

Visar resultat 16 - 20 av 20 avhandlingar innehållade ordet Träfysik.

  1. 16. Colour changes and acid formation in wood during heating

    Författare :Bror Sundqvist; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood Physics; Träfysik;

    Sammanfattning : Heating wood has since ancient times been a method to dry and modify its properties. Nowadays heat is used in industrial processes for the same reasons. Treatment at temperatures above 150ºC can change the colour, improve resistance to biodegradation and enhance dimensional stability. LÄS MER

  3. 17. Wood colour related to kiln drying

    Författare :Bror Sundqvist; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood Physics; Träfysik;

    Sammanfattning : Raised temperature in artificial drying has led to some changes of wood products such as colour and strength etc. For special treatment of wood-products with clearly modified properties, among them colour, is often high temperature and steam used industrially. LÄS MER

  4. 18. Moisture content measurement in the wood industry

    Författare :Tommy Vikberg; Björn Källander; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood Physics; Träfysik;

    Sammanfattning : In the wood industry, determination of the moisture content (mc) with a highaccuracy is of great importance. The green mc is important for optimisation of thewood drying process at sawmills, whereas the mc of dried boards is of interest for thefurther processing and final use of the boards. LÄS MER

  5. 19. CT-scanning of moisture distribution and shell formation during wood drying

    Författare :Pär Wiberg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood Physics; Träfysik;

    Sammanfattning : .... LÄS MER

  7. 20. X-ray CT-scanning of wood during drying

    Författare :Pär Wiberg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träfysik; Wood Physics;

    Sammanfattning : Moisture flux in wood during drying was studied using a medical CT scanner. A special device was built that enables performance of nondestructive measurements without removing the test piece during the whole drying process. LÄS MER