Search for dissertations about: "Teknisk mekanik"

Showing result 1 - 5 of 785 swedish dissertations containing the words Teknisk mekanik.

  1. 1. Road surface characterization using near infrared spectroscopy

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Johan Casselgren; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering mechanics - Other engineering mechanics; Spektroskopi; Väglagsklassificering; Friktion; Väglagskarakterisering; Teknisk mekanik - Övrig teknisk mekanik; Experimental Mechanics; Experimentell mekanik;

    Abstract : This thesis presents a technology and method for classifying and characterizing different road conditions such as dry asphalt and asphalt covered with water, ice and snow. The method uses light sources of different wavelengths to illuminate the road surface and a detector to measure the reflected light from the road surfaces, dependent on how the surface have absorbed, scattered and polarized the light it is possible to classify the road condition. READ MORE

  2. 2. Vibration-based Assessment of Tensegrity Structures

    University dissertation from KTH Royal Institute of Technology

    Author : Nasseradeen Ashwear; Eriksson Anders; Thomas Abrahamsson; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tensegrity; Pre-stress; Vibration; Health monitoring; Buckling; Temperature effect; Vibration health monitoring VHM; Optimization; Teknisk mekanik; Engineering Mechanics;

    Abstract : Vibration structural health monitoring (VHM) uses the vibration properties to evaluate many civil structures during the design steps, building steps and service life.The whole function, expressed by stiffness and frequencies of tensegrity structures are primarily related to the level of pre-stress. READ MORE

  3. 3. Vibration Frequencies as Status Indicators for Tensegrity Structures

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Nasseradeen Ashwear; Anders Eriksson; Karl-Gunnar Olsson; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tensegrity; Pre-stress; Vibration; Health monitoring; Buckling; Temperature effect; Vibration health monitoring VHM; Tensegritet; Förspänning; Vibration; Hälsokontroll; Knäckning; Temperatureffekt; Vibrationsbaserad hälsokontroll; Teknisk mekanik; Engineering Mechanics;

    Abstract :  Applications of vibration structural health monitoring (VHM) techniques are increasing rapidly. This is because of the advances in sensors and instrumentation during the last decades. VHM uses the vibration properties to evaluate many civil structures during the design steps, building steps and service life. READ MORE

  4. 4. Computational model of abdominal aortic aneurysm inception and evolution

    University dissertation from KTH Royal Institute of Technology

    Author : Andrii Grytsan; T. Christian Gasser; Nicholas Hill; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aneurysm; three dimensional; elastin degradation; growth; remodeling; fluid-solid-growth model; Teknisk mekanik; Engineering Mechanics;

    Abstract : Incidence of abdominal aortic aneurysm (AAA) is increasing in the aging society of the western world. Development of AAA is mostly asymptomatic and is characterized by a bulge in the abdominal aorta. However, AAA may suddenly rupture, which results in an internal bleeding associated with a high mortality rate. READ MORE

  5. 5. Transitional and turbulent fibre suspension flows

    University dissertation from KTH Royal Institute of Technology

    Author : Mathias Kvick; Fredrik Lundell; Daniel Söderberg; Lisa Prahl Wittberg; Björn Hof; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluid mechanics; fibre suspension; turbulence; laminar-turbulent transition; image analysis; hydrodynamic stability; cellulose nanofibrils.; Teknisk mekanik; Engineering Mechanics;

    Abstract : In this thesis the orientation of macro-sized fibres in turbulent flows is studied, as well as the effect of nano-sized fibrils on hydrodynamic stability. The focus lies on enabling processes for new materials where cellulose is the main constituent. READ MORE