Sökning: "Anisotropic"

Visar resultat 1 - 5 av 409 avhandlingar innehållade ordet Anisotropic.

  1. 1. Vibro-acoustic modelling of anisotropic poroelastic materials : characterisation of the anisotropic properties

    Författare :Christophe Van der Kelen; Peter Göransson; Wim Desmet; Kirill Horoshenkov; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The present-day challenges in the transport industry, steered by the increasing environmental awareness, necessitate manufacturers to take measures to reduce emissions related to the movements of goods and humans. In particular, the measures aiming at a reduced mass or higher load capacity to increase fuel efficiency,  generally deteriorate the noise and vibration insulation properties of their products. LÄS MER

  2. 2. Development and Applications of Surface-Confined Transition Metal Complexes : Heterogeneous Catalysis and Anisotropic Particle Surfaces

    Författare :Kristofer Eriksson; Jan-Erling Bäckvall; Graham Hutchings; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; heterogeneous catalysis; anisotropic particles; protein gradients; nanoparticles; organisk kemi; Organic Chemistry;

    Sammanfattning : The main focus of this thesis has been directed towards developing novel surface-confined transition metal complexes for applications in heterogeneous catalysis and for the preparation of anisotropic particle surfaces. The first part describes the heterogenization of a homogeneous transition metal-based catalyst tetraphenyl cobalt porphyrin (CoTPP) on silicon wafers and on silica particles. LÄS MER

  3. 3. Anisotropic dry friction models

    Författare :Lars Holmdahl; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  4. 4. Micro-Structure Modelling of Acoustics of Open Porous Material

    Författare :Eva Lundberg; Peter Göransson; Per Wennhage; Ulf Orrenius; Camille Perrot; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; acoustics; porous material; flow resistivity; micro-structure; anisotropic; foam; strut; Vehicle and Maritime Engineering; Farkostteknik;

    Sammanfattning : Transportation is a large and growing part of the world’s energy consumption. This drives a need for reduced weight of rail vehicles, just as it does for road vehicles. In spite of weight reductions, the vehicle still has to provide the same level of acoustic comfort for the passengers. LÄS MER

  5. 5. On the Design and Life Prediction of Transmission Belts Made of Elastomer Composites

    Författare :Dag Fritzson; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction; Material properties; Elastomer; Composite; Damage; Fatigue; Viscoelastic; Anisotropic; Wear; Constitutive theory; Life prediciton; V-belt; Belt transmission; Rubber;

    Sammanfattning : Next to gear transmissions, belt transmissions are the most important mechanical transmissions. Today, belt design and development is based on extensive application tests of belts in the product development process. There is a need for theory development and design support systems. LÄS MER