Sökning: "Per Hedmark"

Hittade 2 uppsatser innehållade orden Per Hedmark.

1. 1. Influence of ANS Triboconditioning on friction and fatigue in rolling contact configurations

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Björn Hedmark; Per Wallgren; [2019]
   Nyckelord :Tribology; friction; fatigue; micropitting; surface engineering; twin-disc; triboconditioning; LTU;

   Sammanfattning : The automotive industry is constantly being challenged by customers and authorities to enhance the efficiency of the internal combustion engine (ICE) in order to achieve improved fuel consumption and reduced emissions. There are several interfaces within the design of an ICE that causes frictional losses, one of them is the valvetrain. LÄS MER

3. 2. Stålbalkars bärförmåga vid intryckning - orsakad av lokal momentbelastning

   Uppsats för yrkesexamina på grundnivå, KTH/Byggvetenskap

   Författare :Per Hedmark; [2007]
   Nyckelord :Patch loading; concentrated moments; Lokal intryckning; lokal momentbelastning; ;

   Sammanfattning : This master thesis deals with steel girders subjected to patch loading caused by concentrated moments. There exist no good methods to calculate by hand the ultimate resistance for this load case. In “tunnplåtshandboken”, (Handbook for sheet metal, which is published by SSAB), one calculation method is presented. LÄS MER