Sökning: "Experimentell mekanik"

Visar resultat 1 - 5 av 134 avhandlingar innehållade orden Experimentell mekanik.

  1. 1. Road surface characterization using near infrared spectroscopy

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Johan Casselgren; Luleå tekniska universitet.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering mechanics - Other engineering mechanics; Spektroskopi; Väglagsklassificering; Friktion; Väglagskarakterisering; Teknisk mekanik - Övrig teknisk mekanik; Experimental Mechanics; Experimentell mekanik;

    Sammanfattning : 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. LÄS MER

  2. 2. Experimental investigation of snow metamorphism at near-surface layers

    Detta är en avhandling från Luleå : Luleå University of Technology

    Författare :Lavan Kumar Eppanapelli; Luleå tekniska universitet.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Snow metamorphism; NIR reflectance; Snow and Ice; Radiative transfer equation; Paramterization; Snow properties; Tomography; Snow microstructure; Experimentell mekanik; Experimental Mechanics;

    Sammanfattning : Snow metamorphism is a direct objective in many snow research areas, and its charac-terisation is a major challenge in areas including winter road maintenance, detection of icing on wind turbine blades, and snow quality mapping for skiing. A common effect of snow metamorphism is compaction, which can be investigated from the associated vari-ations in physical properties of snow. LÄS MER

  3. 3. Digital holographic interferometry in a disturbed environment

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Henrik Lycksam; Luleå tekniska universitet.; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Sammanfattning : Digital holographic interferometry is an optical measurement technique that is capable of measuring the movement/deformation of an object surface with extremely high accuracy, spatial resolution and temporal resolution. But, because it is very sensitive to disturbances, it is mostly used in well controlled laboratory environments. LÄS MER

  4. 4. On-line shape inspection using a projected fringe pattern

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Sara Rosendahl; Luleå tekniska universitet.; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Sammanfattning : A stereo camera system together with a single projected fringe pattern and one image recording is used to measure 3D-shape. The idea is to make the measurement quick enough to be able to use the method when testing quality on-line in manufacturing industry. For this to be possible the digital master (e.g. LÄS MER

  5. 5. Multiplexed Digital Holography incorporating Speckle Correlation

    Detta är en avhandling från Luleå tekniska universitet

    Författare :Davood Khodadad; Luleå tekniska universitet.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Technology byts ev till Engineering ; Teknik; Experimental Mechanics; Experimentell mekanik;

    Sammanfattning : In manufacturing industry there is a high demand for on line quality control to minimize the risk of incorrectly produced objects. Conventional contact measurement methods are usually slow and invasive, meaning that they cannot be used for soft materials and for complex shapes without influencing the controlled parts. LÄS MER