Search for dissertations about: "Brittle"

Showing result 1 - 5 of 202 swedish dissertations containing the word Brittle.

  1. 1. Experiments and modelling of fracture initiation at impact

    University dissertation from Avd för Hållfasthetslära, Box 118, 221 00 Lund

    Author : Ola Wall; Lunds universitet.; Lund University.; [2000]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vibration and acoustic engineering; vacuum technology; hydraulics; Viscoplasticity; Mechanical engineering; Ductile; Brittle; Dynamic; Fracture; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik; Material technology; Materiallära; materialteknik;

    Abstract : Popular Abstract in Swedish Denna avhandling behandlar olika frågor som var och en är av stor betydelse för förståelsen av dynamiska brott i stål. Särskilt betonas sprickpropageringsförsök, utförda i överslagsområdet mellan segt och sprött beteende, samt de slutsatser som kan dras av försöken. READ MORE

  2. 2. Plug shear failure in nailed timber connections avoiding brittle and promoting ductile failures

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Helena Johnsson; Luleå tekniska universitet.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träbyggnad; Timber Structures;

    Abstract : Mechanical timber connections can fail both in a brittle and a ductile manner depending on the joint layout. Plug shear failure in nailed timber connections is a brittle failure mode, which shall be avoided in timber structures. READ MORE

  3. 3. Post-failure behaviour of brittle rock

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Hossein M. Hakami; [1988]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gruv- och Berganläggningsteknik; Mining and Rock Engineering;

    Abstract : The study of the post-failure behaviour of brittle rocks in the laboratory needs stiff and servo-controlled testing machines. Yet, the problem is not completely solved unless a suitable feedback signal is created for the servo-loop of the testing machine. READ MORE

  4. 4. Pure shear fracture of brittle rock : a theoretical and laboratory study

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Qiuhua Rao; [1999]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gruv- och Berganläggningsteknik; Mining and Rock Engineering;

    Abstract : This doctoral thesis deals with determination of Mode II fracture toughness, KIIc, for rock. Three types of specimens, antisymmetric four-point bending, direct shearing and compression-shear specimens, are experimentally and numerically investigated. READ MORE

  5. 5. Analysis of thermal shock in brittle materials

    University dissertation from Stockholm : Materialvetenskap

    Author : Marianne Collin; KTH.; [2001]
    Keywords : thermal shock; thermal stress; stress intensity; vickers indentation; alumina; silicon varbide whisker reinforced alumina;

    Abstract : This thesis concerns thermal shock damage of ceramicmaterials. More specifically the work is focused on theoreticaland practical aspects of a new technique for determining thethermal shock resistance of brittle materials. READ MORE