The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

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

På svenska

Author

Summary, in English

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.

Publishing year

2015

Language

English

Pages

16-27

Publication/Series

NDT & E International

Volume

69

Document type

Journal article

Publisher

Elsevier

Topic

  • Geotechnical Engineering

Keywords

  • Concrete
  • Impact-Echo
  • P-wave velocity
  • Thickness
  • Near field effect

Status

Published

ISBN/ISSN/Other

  • ISSN: 0963-8695