Sökning: "depth profile"

Visar resultat 6 - 10 av 117 avhandlingar innehållade orden depth profile.

1. 6. On Simulation of Uniform Wear and Profile Evolution in the Wheel - Rail Contact

   Författare :Roger Enblom; Mats Berg; Simon Iwnicki; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wheel-rail contact; wear; wear prediction; wear model; wheel profile; rail; Vehicle engineering; Farkostteknik;

   Sammanfattning : Numerical procedures for reliable wheel and rail wear prediction are rare. Recent development of simulation techniques and computer power together with tribological knowledge do however suggest computer aided wear prediction as possible. LÄS MER

3. 7. Seismic-Reflection and Seismic-Refraction Imaging of the South Portuguese Zone Fold-and-Thrust Belt

   Författare :Cedric Schmelzbach; Christopher Juhlin; Laust Pedersen; Hans Thybo; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geophysics; Dip-moveout; Prestack time migration; Crooked-line geometry; Traveltime tomography; Inversion; Seismic velocity; IBERSEIS profile; Variscan orogeny; Iberian Pyrite Belt; Geofysik; Earth sciences; Geovetenskap;

   Sammanfattning : The South Portuguese Zone (SPZ), which host world-class massive sulphide deposits, forms the southern fold-and-thrust belt of the Iberian Variscan orogeny. This thesis focuses on seismic-reflection and seismic-refraction processing efforts on a subset of the IBERSEIS deep seismic-reflection data set aiming at resolving the SPZ upper crust in high resolution. LÄS MER

4. 8. Extracting 3D Information from 2D Crooked Line Seismic Data on Hardrock Environments

   Författare :Johiris Isabel Rodriguez Tablante; Christopher Juhlin; Pekka Heikkinen; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Hardrock Environment; Crooked line; Reflection Seismics; signal-to-noise; cross-dip; cross-profile; Geovetenskap; Earth sciences; Geovetenskap;

   Sammanfattning : Seismic methods have been used in sedimentary environment for almost 80 years. During that time, exploration geophysicists have developed a number of techniques to handle specific aspects of working in sedimentary areas. LÄS MER

5. 9. Laboratory Investigations of Frost Action Mechanisms in Soils

   Författare :Deniz Dagli; Jan Laue; Tommy Edeskär; Lukas Arenson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cold Regions Soil Mechanics; Frost Action; Frost Depth; Frost Heave; Heat Flow in Soils; Ice Lens Formation; Image Analysis; Laboratory Freezing Test; Soil Mechanics; Geoteknik;

   Sammanfattning : Phase change of the water in the soil skeleton under cold climate conditions (also known as frost action in soils) affects soil properties and can be responsible for serious alterations in a soil body; causing damages (due to the volumetric expansion known as frost heave) to structures on or below the ground surface such as foundations, roads, railways, retaining walls and pipelines, etc. In order to improve the current design methods for roads against frost action, the Swedish Transport Administration (Trafikverket) has initiated a research program. LÄS MER

7. 10. Adaptive tensor-based morphological filtering and analysis of 3D profile data

   Författare :Anders Landström; Cris Luengo; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Signal Processing;

   Sammanfattning : Image analysis methods for processing 3D profile data have been investigated and developed. These methods include; Image reconstruction by prioritized incremental normalized convolution, morphology-based crack detection for steel slabs, and adaptive morphology based on the local structure tensor. LÄS MER