Sökning: "surface-waves"
Visar resultat 6 - 10 av 35 avhandlingar innehållade ordet surface-waves.
6. Non-contact surface wave measurements on pavements
Sammanfattning : In this thesis, nondestructive surface wave measurements are presented for characterization of dynamic modulus and layer thickness on different pavements and cement concrete slabs. Air-coupled microphones enable rapid data acquisition without physical contact with the pavement surface. LÄS MER
7. Perfectly Matched Layers and High Order Difference Methods for Wave Equations
Sammanfattning : The perfectly matched layer (PML) is a novel technique to simulate the absorption of waves in unbounded domains. The underlying equations are often a system of second order hyperbolic partial differential equations. In the numerical treatment, second order systems are often rewritten and solved as first order systems. LÄS MER
8. Theoretical Investigation on Propagation and Coupling of Nonreciprocal Electromagnetic Surface Waves
Sammanfattning : This thesis aims at revealing the fundamental guiding and coupling properties of nonreciprocal electromagnetic surface waves on magneto-optical or gyromagnetic media and designing novel applications based on the properties.We introduce the background in the first chapter. LÄS MER
9. A numerical investigation of the level set method for computing free surface waves
Sammanfattning : .... LÄS MER
10. Application of the SASW-technique in geotechnical in-situ testing
Sammanfattning : With the main aim to test the applicability of the surface wave seismic technique Spectral Analysis of Surface Waves (SASW), used for determination of the shear stiffness (shear modulus - Gmax), four areas of applications have been studied. The four areas have been sites with natural geological conditions, sites where non destructive testing is necessary, pavement testing and multichannel testing. LÄS MER