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Showing result 1 - 5 of 511 swedish dissertations matching the above criteria.

  2. 1. Scale dependency, hetrogeneity and anisotropy of surface roughness of rock fractures

    Author : Nader Fardin; KTH; []
    Keywords : Rock fracture; Roughness; Heterogeneity; Anisotropy; Fractals; Stationarity; Roughness length method; Statistical analysis; Erroranalysis; 3D-laser scanning;

    Abstract : .... READ MORE

  4. 2. Modelling of wheel/rail interaction considering roughness and discrete irregularities

    Author : Astrid Pieringer; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; roughness; non-Hertzian contact; railway noise; vertical wheel rail interaction; time domain; discrete irregularities;

    Abstract : The interaction between wheel and rail is the predominant source of noise emission from railway operations in a wide range of conventional speeds. On the one hand, this wheel/rail noise concerns rolling noise and impact noise caused by the vertical interaction excited by roughness and discrete irregularities of the wheel/rail running surfaces, respectively. READ MORE

  5. 3. Vehicle Disc Brake Roughness Noise : Experimental Study of the Interior Noise andVibro-Acoustic Modelling of Suspension Systems

    Author : Eskil Lindberg; Nils-Erik Hörlin; Peter Göransson; Wolfgang Kropp; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; acoustics; disc brake; surface topography; wire brush noise; roughness noise; component mode synthesis; vehicle suspension;

    Abstract : Prediction of vehicle disc brake roughness noise is a non-trivial challenge. In fact, neither the source mechanisms, nor the transfer paths are so far well understood. READ MORE

  6. 4. Interactive surface modelling and representation of surface roughness & topography

    Author : Bengt-Göran Rosen; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; expert system; three dimensional surface roughness; image processing; CAD; simulation of 3-d surface; surface roughness; cylinder liner;

    Abstract : .... READ MORE

  7. 5. Topographical Impact on Space Charge Injection, Accumulation and Breakdown in Polymeric HVDC Cable Interfaces

    Author : Espen Doedens; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; interfaces; XLPE; roughness; cable peelings; polymer surfaces; space charge; field enhancement factor; PEA; DC breakdown; extruded cable; roughness enhanced charge injection; HVDC; charge injection;

    Abstract : Extruded HVDC cable systems feature a variety of interface types, for which physio-chemical properties will depend on the type of application. Such applications can be joints, terminations or the cable itself, all introducing different material combinations and manufacturing methods. READ MORE