Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Systematic errors in Impact-Echo thickness estimation due to near field effects

Tofeldt, Oskar LU and Rydén, Nils LU (2015) In NDT & E International 69. p.16-27
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. (C) 2014 The Authors. Published by Elsevier Ltd.
Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Concrete, Impact-Echo, P-wave velocity, Thickness, Near field effect
in
NDT & E International
volume
69
pages
16 - 27
publisher
Elsevier
external identifiers
  • wos:000347664000004
  • scopus:84908241836
ISSN
0963-8695
DOI
10.1016/j.ndteint.2014.09.003
language
English
LU publication?
yes
id
47d79bba-0a59-4d3d-ae46-552596efc5e4 (old id 5070050)
date added to LUP
2016-04-01 11:07:34
date last changed
2022-01-26 05:38:55
@article{47d79bba-0a59-4d3d-ae46-552596efc5e4,
  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. (C) 2014 The Authors. Published by Elsevier Ltd.}},
  author       = {{Tofeldt, Oskar and Rydén, Nils}},
  issn         = {{0963-8695}},
  keywords     = {{Concrete; Impact-Echo; P-wave velocity; Thickness; Near field effect}},
  language     = {{eng}},
  pages        = {{16--27}},
  publisher    = {{Elsevier}},
  series       = {{NDT & E International}},
  title        = {{Systematic errors in Impact-Echo thickness estimation due to near field effects}},
  url          = {{http://dx.doi.org/10.1016/j.ndteint.2014.09.003}},
  doi          = {{10.1016/j.ndteint.2014.09.003}},
  volume       = {{69}},
  year         = {{2015}},
}