Sökning: "microcracking"

Visar resultat 1 - 5 av 21 avhandlingar innehållade ordet microcracking.

  1. 1. Behaviour of fracture process zones in concrete influenced by simultaneously applied normal and shear displacements

    Författare :Manouchehr Hassanzadeh; Avdelningen för Byggnadsmaterial; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; softening; mixed mode; fictitious crack model; concrete; deformationer; betong; brottmekanik; hållfasthet; brotthållfasthet; spänningar; skjuvspänningar; sprickor; beräkningsmodeller; brottenergi; teori; laboratorieförsök; interlock; crack path; diagonal crack; microcracking; instability; fracture energy; fracture mechanics; shear; tension; process zone;

    Sammanfattning : The thesis deals with the determination of the post peak behaviour of concrete in pure tension, and combined tension (compression) and shear. A test arrangement has been developed in order to determine the post peak behaviour of concrete expressed as stress - displacement curves. LÄS MER

  3. 2. Alkali activated slag mortar : mechanical strengths, shrinkage and structure

    Författare :Tomas Kutti; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydration products; moisture dependent length changes; matrix structure; cement; pore structure; microcracking;

    Sammanfattning : .... LÄS MER

  4. 3. Microstructure and properties of ceramic matrix composites

    Författare :Håkan A. Swan; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; creep resistance; microcracking; oxidation; fracture behaviour; temperature; deformation mechanisms; whisker reinforced CMC materials; electron microscopy;

    Sammanfattning : .... LÄS MER

  5. 4. New melamine-formaldehyde composites

    Författare :Björn Voigt; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbon fibres; strength; composite; stiffness; melamine-formalehyde; microcracking;

    Sammanfattning : .... LÄS MER

  7. 5. Matrix and interface effects on microcracking in polymer composites

    Författare :Anders Sjögren; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : An underlying industrial problem for the present work is leakage of pressure vessels. Fluid leakage was confirmed to take place along a path of connected microcracks and delaminations. The thesis is concerned with the micromechanisms for microcracking studied by in-situ optical microscopy of cross-ply laminates. LÄS MER