Sökning: "anisotropy"

Visar resultat 1 - 5 av 492 avhandlingar innehållade ordet anisotropy.

  1. 1. Transverse anisotropy in softwoods : Modelling and experiments

    Författare :Carl S. Modén; Lars Berglund; Lennart Salmén; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Softwood; Cellular solid; Anisotropy; Deformation mechanisms; Materials science; Teknisk materialvetenskap;

    Sammanfattning : Transverse anisotropy is an important phenomenon of practical and scientific interest. Although the presence of ray tissue explains the high radial modulus in many hardwoods, experimental data in the literature shows that this is not the case for pine. LÄS MER

  3. 2. Fatigue Anisotropy in Forged Components

    Författare :Cornelius Temmel; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Inclusion Cluster; Low Sulfur; Machinability; Inclusion; Manganese Sulfide; Quenching Crack; Forging; Isotropic Quality; Steel; Anisotropy;

    Sammanfattning : Ever-growing requirements on combustion engine efficiency of motor vehicles demand increasing service loads in powertrain components. Optimization of component material is therefore inevitable. A major detriment with many forged transmission components is their anisotropic mechanical behavior, not least during cyclic loading. LÄS MER

  4. 3. Scale dependency, hetrogeneity and anisotropy of surface roughness of rock fractures

    Författare :Nader Fardin; KTH; []
    Nyckelord :Rock fracture; Roughness; Heterogeneity; Anisotropy; Fractals; Stationarity; Roughness length method; Statistical analysis; Erroranalysis; 3D-laser scanning;

    Sammanfattning : .... LÄS MER

  5. 4. On the modeling of large ratcheting strains and anisotropy in pearlitic steel

    Författare :Göran Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Large strains; Plasticity; Anisotropy; Ratcheting; Kinematic hardening;

    Sammanfattning : Thermodynamically consistent constitutive material models for describing the large strain response of polycrystalline metals are proposed. Emphasis is put on the multiaxial ratcheting under cyclic loading and the evolution of anisotropy in pearlitic steel. LÄS MER

  7. 5. Anisotropy in pearlitic steel subjected to rolling contact fatigue - modelling and experiments

    Författare :NASIM LARIJANI; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pearlitic steel; crack propagation; Rolling Contact Fatigue; Anisotropy; plasticity; High Pressure Torsion;

    Sammanfattning : In rails and wheels subjected to severe rolling/sliding contact, large plastic deformations accumulate in the surface layer. This decreases the fatigue resistance of components and makes this layer prone to formation of common rolling contact related defects. LÄS MER