Title :

Influence of frequency range of surface waves on estimation of parameters of heterogeneous concrete using non-contact method

Author(s) :

Drelich, Radoslaw [Auteur]
Kazimierz Wielki University [UKW]
Piwakowski, Bogdan [Auteur]
Transduction, Propagation et Imagerie Acoustique - IEMN [TPIA - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Kaczmarek, Mariusz [Auteur]
Kazimierz Wielki University [UKW]

Conference title :

3rd Polish Congress of Mechanics and 21st International Conference on Computer Methods in Mechanics, PCM-CMM 2015

City :

Gdansk

Country :

Pologne

Start date of the conference :

2015-09-08

English keyword(s) :

surface waves
concrete
cover layer
inhomogeneity
dispersion
non-contact measurements
inversion
NDT

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

This work is focused on studies of influence of selection of the frequency range of dispersion curves of surface waves on efficiencyof estimation of the bulk elastic wave velocities and thickness of layers of non-homogeneous ...
Show more >This work is focused on studies of influence of selection of the frequency range of dispersion curves of surface waves on efficiencyof estimation of the bulk elastic wave velocities and thickness of layers of non-homogeneous concrete. The experimental data comesfrom non-contact ultrasonic method and estimation of material properties uses optimization procedures. As the model the Thomson-Haskel theory of propagation of surface waves in layered media is used. The model predicts dispersion relationships of pseudoRayleigh waves. The experimental dispersion curves are obtained by using the Slant-Stack transform. Quality of estimation wasassessed based on analysis of fitting of dispersion curves and evaluation of the estimation error of the thickness of the top layers andthe velocity of transverse waves for the individual layers.Show less >

Language :

Anglais

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL