Sökning: "strain measurement"

Visar resultat 11 - 15 av 127 avhandlingar innehållade orden strain measurement.

  1. 11. Analysis of elastic waves in rods from two-point strain measurement : extension tin non-uniform systems and applications to bit-rock interaction and rotational mobility

    Författare :Janne Carlsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : .... LÄS MER

  3. 12. Modeling of Elasticity and Damping for Filled Elastomers

    Författare :Per Erik Austrell; Byggnadsmekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rheological models; contact-free strain measurement; modified hardness test; solid dumbbell test specimen; mechanical conditioning; strain energy plot; hyperelasticity; carbon-black-filled rubbers; amplitude dependence; multiaxial viscoplastic model; Building construction; Byggnadsteknik;

    Sammanfattning : Elasticity and damping are significant properties of rubber, taken advantage of in engineering applications. It is therefore important that the constitutive model accurately captures these aspects of the mechanical behavior. LÄS MER

  4. 13. On the Experimental Determination of Damping of Metals and Calculation of Thermal Stresses in Solidifying Shells

    Författare :Jonas Åberg; Hasse Fredriksson; Björn Widell; Michael Vynnycky; Toshihiko Emi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; material damping; measurement methods; calorimetric methods; optical strain gauge measurements; hot cracking; stress in solid shells; ALE; Materials science; Teknisk materialvetenskap;

    Sammanfattning : This thesis explores experimentally and theoretically two different aspects of the properties and behaviour of metals: their ability to damp noise and their susceptibility to crack when solidifying. The first part concerns intrinsic material damping, and is motivated by increased demands from society for reductions in noise emissions. LÄS MER

  5. 14. On the small strain stiffness of some Scandinavian clays and impact on deep excavation

    Författare :Tara Wood; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; soft clay; small strain stiffness; degradation; seismic testing; sample quality;

    Sammanfattning : This thesis presents the results of a comprehensive study on the small strain stiffness of several Swedish clays and its tentative effect on the design of retaining structures. A combination of field measurement techniques, seismic dilatometer and surface seismics, are complemented with bender element testing of the retrieved samples. LÄS MER

  7. 15. Durability of Embedded Fibre Optic Sensors in Composites

    Författare :Klas Levin; KTH; []
    Nyckelord :composites; fibre optic sensor; embedded EFPI sensor; bragg grating sensor; durability. Fatique; impact strain measurement;

    Sammanfattning : This thesis concerns various aspects of the durability offibre optic sensors embedded in composite. Since repair orreplacement of embedded sensors is not generally possible, thefunctional reliability of embedded sensors is one of the mostimportant prerequisites for successful use. LÄS MER