The sensitivity of coda wave interferrometry in concrete structures in different scattering regimes
(2016) European Workshop on Structural Health Monitoring, 2016 1. p.378-387- Abstract
Coda wave interferometry (CWI) has been demonstrated to be a very sensitive tool for detecting early signs of damage in concrete. The choice of frequency in SHM applications, utilizing coda waves, is not straight-forward, as there is a trade-off in sensitivity and possible propagation distances. This study aims to provide some steps in establishing recommendations as to choice of frequency, when designing CWI SHM systems, based on expected size of damage and size of the monitored structure. To this end codas with widely different central frequencies were used to detect boreholes at different relative locations in the concrete. The results suggest that, for damage which can be simulated by drilled holes on the scale of a few mm, signals... (More)
Coda wave interferometry (CWI) has been demonstrated to be a very sensitive tool for detecting early signs of damage in concrete. The choice of frequency in SHM applications, utilizing coda waves, is not straight-forward, as there is a trade-off in sensitivity and possible propagation distances. This study aims to provide some steps in establishing recommendations as to choice of frequency, when designing CWI SHM systems, based on expected size of damage and size of the monitored structure. To this end codas with widely different central frequencies were used to detect boreholes at different relative locations in the concrete. The results suggest that, for damage which can be simulated by drilled holes on the scale of a few mm, signals in the range of 50-150 kHz is suitable for SHM applications in large concrete structures.
(Less)
- author
- Fröjd, Patrik LU and Ulriksen, Peter LU
- organization
- publishing date
- 2016
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Coda waves, CWI, Diffuse field, Structural health monitoring, Ultrasound
- host publication
- 8th European Workshop on Structural Health Monitoring, EWSHM 2016
- volume
- 1
- pages
- 10 pages
- publisher
- NDT.net
- conference name
- European Workshop on Structural Health Monitoring, 2016
- conference location
- Bilbao, Spain
- conference dates
- 2016-07-05 - 2016-07-08
- external identifiers
-
- scopus:84994810326
- ISBN
- 9781510827936
- language
- English
- LU publication?
- yes
- id
- 1838bc4f-f614-4743-baf0-21f7c2029b7c
- date added to LUP
- 2017-04-24 15:05:25
- date last changed
- 2022-01-30 19:45:47
@inproceedings{1838bc4f-f614-4743-baf0-21f7c2029b7c,
abstract = {{<p>Coda wave interferometry (CWI) has been demonstrated to be a very sensitive tool for detecting early signs of damage in concrete. The choice of frequency in SHM applications, utilizing coda waves, is not straight-forward, as there is a trade-off in sensitivity and possible propagation distances. This study aims to provide some steps in establishing recommendations as to choice of frequency, when designing CWI SHM systems, based on expected size of damage and size of the monitored structure. To this end codas with widely different central frequencies were used to detect boreholes at different relative locations in the concrete. The results suggest that, for damage which can be simulated by drilled holes on the scale of a few mm, signals in the range of 50-150 kHz is suitable for SHM applications in large concrete structures.</p>}},
author = {{Fröjd, Patrik and Ulriksen, Peter}},
booktitle = {{8th European Workshop on Structural Health Monitoring, EWSHM 2016}},
isbn = {{9781510827936}},
keywords = {{Coda waves; CWI; Diffuse field; Structural health monitoring; Ultrasound}},
language = {{eng}},
pages = {{378--387}},
publisher = {{NDT.net}},
title = {{The sensitivity of coda wave interferrometry in concrete structures in different scattering regimes}},
volume = {{1}},
year = {{2016}},
}