Search for dissertations about: "non destructive test"

Showing result 1 - 5 of 45 swedish dissertations containing the words non destructive test.

  2. 1. Mechanics of Cross-Laminated Timber

    Author : Dietrich Buck; Olle Hagman; Dick Sandberg; Mats Ekevad; Mikael Sjödahl; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CLT assembly; CLT manufacture; Crosslam; DIC analysis; Digital speckle photography; Full-field mechanics; Laminated wood product; Mass timber engineering; Non-contact measurement; Non-destructive; Optical measurement; Panel configuration; Strain localization; X-lam; Alternativ byggmetod; Bildkorrelation; Hållbart byggande; KL- trä; Korslimmat trä; Skjuvtöjning; Massivträ; Träkonstruktion; Träteknik; Wood Science and Engineering;

    Abstract : Increasing awareness of sustainable building materials has led to interest in enhancing the structural performance of engineered wood products. Wood is a sustainable, renewable material, and the increasing use of wood in construction contributes to its sustainability. READ MORE

  4. 2. Non-destructive measurement of spiral grain with computed tomography

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

    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

  5. 3. Air-coupled microphone measurements of guided waves in concrete plates

    Author : Henrik Bjurström; Nils Rydén; Björn Birgisson; Tadeusz Stepinski; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Non-destructive testing; Lamb waves; surface waves; air-coupled microphones; non-contact measurements;

    Abstract : Quality control and quality assurance of pavements is today primarily based on core samples. Air void content and pavement thickness are parameters that are evaluated. However, no parameter connected to the stiffness is evaluated. READ MORE

  6. 4. Non destructive testing methods for integrity determination of concrete structures

    Author : Jon Rasmussen; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Tillämpad geofysik; Applied Geophysics;

    Abstract : The ageing of concrete structures can be a threat to human safety as well as being a huge economical factor in the near future. Lifetime prediction and damage assessment of concrete structures will be a growing part of infrastructure planning. READ MORE

  7. 5. Combined speckle interferometry and speckle correlation for non-destructive testing

    Author : Angelica Andersson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Abstract : When a sample is studied during loading in a tensile test machine, the sample is often exposed to rigid body motions during loading at the same time as it deforms due to tension. Therefore, the small deformation field is hard, or impossible, to measure when it is overlaid by a large motion. READ MORE