Search for dissertations about: "indentation test"

Showing result 1 - 5 of 26 swedish dissertations containing the words indentation test.

  2. 1. On indentation methods for characterization of inelastic materials

    Author : Susanna Carlsson; KTH; []
    Keywords : indentation test; material characterization; hardness; contact area; viscoelasticity; creep; plasticity; friction; residual stress; residual strain; Brinell test; Boussinesq test; Vickers test;

    Abstract : .... READ MORE

  4. 2. Mechanical Behaviour of Gas Turbine Coatings

    Author : Mats Eskner; KTH; []
    Keywords : thermal barrier coatings; TBC; small punch test; miniaturised disc bending test; mdbt; spherical indentation; gas turbine coatings; NiAl; NiCoCrAlY; NiCrAlY; mechanical properties;

    Abstract : Coatings are frequently applied on gas turbine components inorder to restrict surface degradation such as corrosion andoxidation of the structural material or to thermally insulatethe structural material against the hot environment, therebyincreasing the efficiency of the turbine. However, in order toobtain accurate lifetime expectancies and performance of thecoatings system it is necessary to have a reliableunderstanding of the mechanical properties and failuremechanisms of the coatings. READ MORE

  5. 3. Rock fragmentation by indentation and disc cutting : some theoretical and experimental studies

    Author : Per-Arne Lindqvist; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Abstract : The main objective of the thesis is to increase the understanding of failure mechanisms of rock drilling and rock cutting methods in general, and rock boring by disc cutters in particular. The thesis consists of five separate papers. Paper A presents the theoretical elastic stress field of indexed indenters and some laboratory observations. READ MORE

  6. 4. The Influence of Steel Sheet Surface-Topography on Friction in Stamping

    Author : Anders Wihlborg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Micro Plasto HydroDynamic Lubrication MPHDL ; EBT; ECD; EDT; WC index; SBT; surface topography; Micro Plasto HydroStatic Lubrication MPHSL ; tribology; steel sheets; Surface Indentation Test; bending under tension;

    Abstract : Steel sheet is the prevalent material for car body panels. In the manufacturing of steel sheets a certain surface roughness is achieved from the ground or textured rolls used in the three final reduction steps. When manufacturing car body panels the sheets first are formed and then painted. READ MORE

  7. 5. Mechanical modeling of granite subjected to indentation loading

    Author : Hossein Shariati; Per-Lennart Larsson; Mahdi Saadati; Francois Hild; Timo Saksala; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solid Mechanics; Hållfasthetslära;

    Abstract : The understanding of the mechanical response of Bohus granite, as typical of hard rocks, to percussive drilling is important to improve the efficiency of such an operation. The resulting problem includes material modeling of the selected type of rock under indentation loading conditions. READ MORE