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Visar resultat 11 - 15 av 598 avhandlingar som matchar ovanstående sökkriterier.

1. 11. Modelling the flexural dynamics of sandwich beams using Bernoulli-Euler or Timoshenko theory with frequency dependent parameters

   Författare :Daniel Backström; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vehicle engineering; Farkostteknik;

   Sammanfattning : .... LÄS MER

3. 12. Who is responsible? : Communication, coordination and collaboration in the future Air Traffic Management system

   Författare :Fredrik Barchéus; Lena Mårtensson; Don Harris; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Air Traffic Management; Aviation; CNS ATM; Controller-Pilot Communication; Responsibility; Future Air Navigation System; Vehicle engineering; Farkostteknik;

   Sammanfattning : nternational civil aviation has experienced a steady growth in the past decades that is foreseen to continue. To overcome capacity limits of the old Air Traffic Control systems, new technology is currently being developed and introduced. LÄS MER

4. 13. Method Development for Computer Aided Engineering for Aircraft Conceptual Design

   Författare :Adrien Bérard; Arthur Rizzi; Dieter Scholz; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aircraft conceptual design; Computer Aided Design CAD ; buffet onset; unsteady vortex-lattice method; Vehicle engineering; Farkostteknik;

   Sammanfattning : This thesis presents the work done to implement new computational tools and methods dedicated to aircraft conceptual design sizing and optimization. These tools have been exercised on different aircraft concepts in order to validate them and assess their relevance and applicability to practical cases. LÄS MER

5. 14. Dynamic track stiffness measurement : a new tool for condition monitoring of track substructure

   Författare :Eric Berggren; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Technology; track stiffness; track maintenance; soil dynamics; measurement; Vehicle engineering; Farkostteknik;

   Sammanfattning : .... LÄS MER

7. 15. Railway Track Stiffness : Dynamic Measurements and Evaluation for Efficient Maintenance

   Författare :Eric Berggren; Mats Berg; Laurent Schmitt; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Railway track stiffness; maintenance; soil dynamics; measurement; simulation; vibration; Vehicle engineering; Farkostteknik;

   Sammanfattning : Railway track stiffness (vertical track load divided by track deflection) is a basic parameter oftrack design which influences the bearing capacity, the dynamic behaviour of passing vehiclesand, in particular, track geometry quality and the life of track components. Track stiffness is abroad topic and in this thesis some aspects are treated comprehensively. LÄS MER