Search for dissertations about: "destructive test"

Showing result 1 - 5 of 44 swedish dissertations containing the words destructive test.

  1. 1. Destructive reumatoid arthritis : Epidemiological, economic, and rheumasurgical aspects

    University dissertation from Linköping : Linköpings universitet

    Author : Brynjolfur Jonsson; [1991]

    Abstract : This study comprising 8 separate papers is concerned with the prevalence of rheumatic disease and different aspects of destructive rheumatoid arthritis in the population.In an epidemiologically representative population subjective joint disease was found in 30% in ages 45 years and over. READ MORE

  2. 2. Moisture Influence on Structural Behaviour of Pavements Field and Laboratory Investigations

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Farhad Salour; Sigurdur Erlingsson; Guy Doré; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Falling Weight Deflectometer FWD ; backcalculation; unbound material; subgrade; seasonal variation; moisture content; spring-thaw; drainage; pavement stiffness; field test; pavement instrumentation; resilient modulus; permanent deformation; repeated load triaxial test; unsaturated soil; matric suction.; Civil and Architectural Engineering; Byggvetenskap; Transportvetenskap; Transport Science;

    Abstract : The structural behaviour of pavements in cold regions can considerably be affected by seasonal variation in environmental factors such as temperature and moisture content. Along with the destructive effect of heavy traffic loads, climatic and environmental factors can considerably contribute to pavement deterioration. READ MORE

  3. 3. Non-destructive measurement of spiral grain with computed tomography

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Paul Sepulveda; [2000]

    Abstract : Spiral grain is a wood feature that is formed in the living tree. Timbers sawn from trees with severe spiral grain have a great tendency to twist when the moisture content changes. This is a big problem in the wood products manufacturing process. READ MORE

  4. 4. Modelling the Variability of Bending Strength in Structural Timber - Length and Load Configuration Effects

    University dissertation from Division of Structural Engineering, Lund University, P.O Box 118, SE-221 00 Lund, Sweden

    Author : Tord Isaksson; [1999]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; code; reliability-based design; Weibull; test standard; load configuration effect; length effect; weak section; machine grading; visual grading; variability; Structural timber; bending strength; simulation; monte carlo simulation.; Building construction; Byggnadsteknik;

    Abstract : The load carrying capacity of a beam of structural timber is dependent both on the span of the beam and the type of loading. The longer the beam and the more uniform the moment distribution, the lower the load carrying capacity. This phenomenon is due to the variability of material properties within a piece of timber. READ MORE

  5. 5. Mechanical Characterization of Engineering Materials by Modal Testing

    University dissertation from Division of Structural Engineering, Lund University, P.O Box 118, SE-221 00 Lund, Sweden

    Author : Daniel Larsson; [1997]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; material variability; modal testing; non-destructive test methods; damping ratios; timber beams; plastic panels; aluminium panel; elastic constants; concrete curing; wood-based panels; solids; high-strength concrete; anisotropic materials;

    Abstract : This thesis deals with the use of modal testing for establishing elastic constants of engineering materials and for indicating material variability in terms of stiffness and damping properties. The methodology using modal testing techniques, is applied to timber beams, high strength concrete prisms, wood-based panels (oriented strand board and chipboard), an aluminium alloy panel and plastic laminate panels (high-pressure laminate). READ MORE