Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6758383 | NDT & E International | 2015 | 12 Pages |
Abstract
Near field effects are found to create systematic errors, within the range of about 5-15%, in thickness estimations from Impact-Echo (IE) testing. This paper studies near field effects from a point source in a combined Multichannel Analysis of Surface Waves (MASW) and Impact-Echo analysis. The near field creates deviations in the measured velocity of the P-wave and the Rayleigh-wave, which lead to an underestimated thickness. This systematic error is identified in both a numerical and a real field case. The results are also compared with the conventional Impact-Echo method.
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Oskar Baggens, Nils Ryden,