Sökning: "Ulf Jonasson"

Hittade 2 avhandlingar innehållade orden Ulf Jonasson.

1. 1. Electron-hole-pair excitations at aluminium surfaces

   Författare :Ulf Jonasson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electron-hole-pairs; aluminium; diploe scattering; electron energy-loss spectroscopy; surface response functiion;

   Sammanfattning : .... LÄS MER

3. 2. Tyre-road Interaction: a holistic approach to noise and rolling resistance

   Författare :Tiago Vieira; Sigurdur Erlingsson; Ulf Sandberg; Anders Genell; Hans Jonasson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pavement; surface; texture; noise; rolling resistance; tyre; Vägbeläggning; vägyta; textur; buller; rullmotstånd; däck; Byggvetenskap; Civil and Architectural Engineering;

   Sammanfattning : Energy dissipation, fuel consumption, real-estate property prices and health issues are some of the aspects related to the tyre/pavement interaction and its functional properties of rolling resistance and noise. The first two aspects are affected by the tyre/road interaction as energy is dissipated mostly by hysteretic losses as the tyre is subjected to dynamic deformations when contacting the pavement surface. LÄS MER