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Frequency selection for coda wave interferometry in concrete structures

Fröjd, Patrik LU and Ulriksen, Peter LU (2017) In Ultrasonics 80. p.1-8
Abstract
This study contributes to the establishment of frequency recommendations for use in coda wave interferometry structural health monitoring (SHM) systems for concrete structures. To this end, codas with widely different central frequencies were used to detect boreholes with different diameters in a large concrete floor slab, and to track increasing damage in a small concrete beam subjected to bending loads. SHM results were obtained for damage that can be simulated by drilled holes on the scale of a few mm or microcracks due to bending. These results suggest that signals in the range of 50–150 kHz are suitable in large concrete structures where it is necessary to account for the high attenuation of high-frequency signals.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Ultrasonics
volume
80
pages
1 - 8
publisher
Elsevier
external identifiers
  • scopus:85018357230
  • wos:000403997100001
ISSN
0041-624X
DOI
https://doi.org/10.1016/j.ultras.2017.04.012
language
English
LU publication?
yes
id
297acac6-0a5b-4cca-8dfc-96bd213e9bbe
date added to LUP
2017-12-11 11:42:58
date last changed
2018-02-01 10:01:06
@article{297acac6-0a5b-4cca-8dfc-96bd213e9bbe,
  abstract     = {This study contributes to the establishment of frequency recommendations for use in coda wave interferometry structural health monitoring (SHM) systems for concrete structures. To this end, codas with widely different central frequencies were used to detect boreholes with different diameters in a large concrete floor slab, and to track increasing damage in a small concrete beam subjected to bending loads. SHM results were obtained for damage that can be simulated by drilled holes on the scale of a few mm or microcracks due to bending. These results suggest that signals in the range of 50–150 kHz are suitable in large concrete structures where it is necessary to account for the high attenuation of high-frequency signals.},
  author       = {Fröjd, Patrik and Ulriksen, Peter},
  issn         = {0041-624X},
  language     = {eng},
  pages        = {1--8},
  publisher    = {Elsevier},
  series       = {Ultrasonics},
  title        = {Frequency selection for coda wave interferometry in concrete structures},
  url          = {http://dx.doi.org/https://doi.org/10.1016/j.ultras.2017.04.012},
  volume       = {80},
  year         = {2017},
}