Sökning: "Christophe Van Der Kelen"

Hittade 2 avhandlingar innehållade orden Christophe Van Der Kelen.

  1. 1. Characterisation of anisotropic acoustic properties of porous materials - inverse estimation of static flow resistivity

    Författare :Christophe Van der Kelen; Peter Göransson; Nicolas Dauchez; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vehicle engineering; Farkostteknik; Acoustics; Akustik;

    Sammanfattning : The production processes of porous materials introduce an inherent geometric anisotropy in the material at micro scale, which influences the material properties at macro scale. In this thesis, the focus is turned to one of these macroscopic properties, the flow resistivity, which is a measure of the resistance felt by the sound pressure waves as they propagate through a porous space. LÄS MER

  3. 2. 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 :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; 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