Search for dissertations about: "sawn"

Showing result 1 - 5 of 69 swedish dissertations containing the word sawn.

  2. 1. Wood Fingerprints : Recognition of Sawn Wood Products

    Author : Tobias Pahlberg; Cris Luengo; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träproduktutveckling; Wood Products Engineering;

    Abstract : This thesis deals with wood fingerprints and presents ways to track sawn wood products through an industrial process using cameras. The possibility to identify individual wood products comes from the biological variation of the trees, where the genetic code, environment and breakdown process creates a unique appearance for every board. READ MORE

  4. 2. Appearance grading of sawn timber

    Author : Anders Lycken; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood Technology; Träteknik;

    Abstract : Grading of sawn timber has by tradition been performed by manual ocular inspection of the wood surfaces. Even today, most wood produced is graded by manual inspection. READ MORE

  5. 3. Appearance grading of sawn timber

    Author : Anders Lycken; RISE; []
    Keywords : ;

    Abstract : .... READ MORE

  6. 4. Microwave sensors for scanning of sawn timber

    Author : Nils Lundgren; Olle Hagman; Gary Schajer; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microwave scanning; wood; density; moisture content; strength grading; finite element; Electronic measurement and instrumentation; Elektronisk mät- och apparatteknik; Träteknik;

    Abstract : A microwave imaging sensor that measures the signal transmitted through a board was investigated with respect to the ability to predict the distribution of moisture and density in sawn lumber. Furthermore, the response from the sensor was related to strength properties of the boards. READ MORE

  7. 5. Numerical Analysis of Moisture-Related Distortion in Sawn Timber

    Author : Sigurdur Ormarsson; Chalmers University of Technology; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computer simulations; Deformation; Wood; Moisture; Drying; Finite element method; Byggteknik; Civil engineering;

    Abstract : A 3D theory for the numerical simulation of deformations and stresses in wood during moisture variation is described. The constitutive model employed assumes the total strain rate to be the sum of the elastic strain rate, the moisture-induced strain rate, the mechano-sorption strain rate and the creep strain rate. READ MORE