Sökning: "Deterioration"

Visar resultat 16 - 20 av 616 avhandlingar innehållade ordet Deterioration.

1. 16. Deterioration Models and Road Capital as Tools in Performance Contracts for Pavement Maintenance

   Författare :Peter Ekdahl; Trafik och väg; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknik; pavement management system; performance contract; pavement maintenance; deterioration model; Technological sciences; road capital; Social sciences; Samhällsvetenskaper;

   Sammanfattning : A reorganization of the Swedish National Road Administration (SNRA) has urged a demand to work as a professional agency only, without any work by direct labor. This structure has enforced a change in how to handle the pavement maintenance and performance contracts are being promoted since they encourage product development and sustainability. LÄS MER

3. 17. Mechanical and environmental studies of marble deterioration

   Författare :Robert Dunakin; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

4. 18. Theoretical and Computational Study on the Onset of Heat Transfer Deterioration in Supercritical Water

   Författare :Maria Jaromin; Henryk Anglart; Bojan Niceno; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; supercritical water; variable properties; heat transfer deterioration; SRA - Energy; SRA - Energi;

   Sammanfattning : .... LÄS MER

5. 19. Analysis of rail breaks and insulated joint deterioration

   Författare :Johan Sandström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rail breaks; Heavy Haul; Insulated joints; Wheel flats; Railway mechanics; Material fatigue;

   Sammanfattning : The thesis deals with fatigue related issues in the field of railway mechanics. In particular rail breaks and deterioration of insulating joints are investigated. The study is largely motivated by plans to increase allowed axle loads in Sweden. LÄS MER

7. 20. Mechanical track deterioration due to lateral geometry irregularities

   Författare :Kalle Karttunen; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rolling contact fatigue; track maintenance; track irregularities; wear; multibody dynamics simulations; Railway track geometry;

   Sammanfattning : This thesis deals with how a degraded track geometry influences further degradation of the geometry and the formation of rolling contact fatigue (RCF) and wear of rails. The overall objective is optimisation of railway maintenance. For this, further understanding and quantification of the deterioration of track components are needed. LÄS MER