Sökning: "TEKNIKVETENSKAP"

Visar resultat 16 - 20 av 563 avhandlingar innehållade ordet TEKNIKVETENSKAP.

1. 16. A study on contact fatigue mechanisms

   Författare :Bo Alfredsson; KTH; []
   Nyckelord :contact fatigue mechanism; spall; spalling; surface crakc; sub-surface crack; elesto-plastic indentation; contact compliance measurement; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : Surfaces subjected to rolling and sliding contacts maysuffer from contact fatigue. This thesisdeals with solidmechanic aspects of contact fatigue including the descriptionand verificationof explaining mechanisms. The new mechanism forsurface initiated contact fatigue is basedon tensile surfacestresses from local asperity contacts. LÄS MER

3. 17. An experimental and numerical study on contact fatigue initiation

   Författare :Bo Alfredsson; KTH; []
   Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : .... LÄS MER

4. 18. Constitutive Behaviour and Fracture of Adhesive Layers : Inverse Methods and Energetic Balance

   Författare :Svante Alfredsson; Högskolan i Skövde; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; adhesive layer; constitutive behaviour; fracture; energy release rate; shear fracture; mode-mixity; experimental method; inverse solution; multi-material joints; TECHNOLOGY; TEKNIKVETENSKAP; Teknik; Technology;

   Sammanfattning : In the automobile industry, current demands on reduced emissions with maintained or even increased crash worthiness, forces the industry to seek weight-reducing designs. The possibility to use lightweight materials is obviously attractive. At joints, these lightweight materials have to be connected to high-strength or low-cost materials. LÄS MER

5. 19. Cost Effective Maintenance for Competitve Advantages

   Författare :Imad Alsyouf; Basim Al-Najjar; Uday Kumar; Växjö universitet; []
   Nyckelord :Maintenance approaches; Maintenance Costs; Savings and Profit; Operations; Quality; Effectiveness; Efficiency; Competitiveness; Productivity; Value Advantages; Profitability; Performance; Balanced Scorecard BSC; Maintenance Selection Method; Fuzzy MCDM; TTT-plot; Cost Effective Maintenance; Mechanistic Model; Vibration Level Prediction; Condition-Based Maintenance; survey; case study; TECHNOLOGY; TEKNIKVETENSKAP; Maskinteknik; Mechanical Engineering;

   Sammanfattning : This thesis describes the role of cost effective maintenance in achieving competitive advantages. It explores by means of a survey which maintenance practices are used, and how maintenance policies are selected in Swedish industries. LÄS MER

7. 20. On Monte Carlo simulation and analysis of electricity markets

   Författare :Mikael Amelin; Lennart Söder; Hans Ravy; KTH; []
   Nyckelord :Electrical engineering; electricity markets; power systems; monte carlo simulation; Elektroteknik; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : This dissertation is about how Monte Carlo simulation can be used to analyse electricity markets. There are a wide range of applications for simulation; for example, players in the electricity market can use simulation to decide whether or not an investment can be expected to be profitable, and authorities can by means of simulation find out which consequences a certain market design can be expected to have on electricity prices, environmental impact, etc. LÄS MER