Narrow-band diffuse ultrasonic wavefield measurements in a network of reciprocal transducers for monitoring of a large concrete floor slab
(2016) European Workshop on Structural Health Monitoring, 2016 1. p.347-356- Abstract
Piezoelectric transducers were attached in a grid on the surface of an 8 x 2 x 0.08 m concrete floor slab. Through an automated, iterative scheme these were used to transmit and receive 50 kHz, continuous, sinusoidal signals, which were sampled by a multi-channel lock-in amplifier. The measured amplitude and phase were used to locate inflicted damage by detecting deviations from baseline measurements, acquired in a reference state. Superficial damage, in the range of centimeter, could easily be detected, even between the transducers placed the furthest apart, and could be located to a grid coordinate on the floor slab.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/996002d6-67c0-4536-9f0e-12b6988661fe
- author
- Fröjd, Patrik LU and Ulriksen, Peter LU
- organization
- publishing date
- 2016
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Continuous wave, Diffuse field, Lock-in amplifier, 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:84994802346
- ISBN
- 9781510827936
- language
- English
- LU publication?
- yes
- id
- 996002d6-67c0-4536-9f0e-12b6988661fe
- date added to LUP
- 2017-04-24 14:38:50
- date last changed
- 2022-01-30 19:45:47
@inproceedings{996002d6-67c0-4536-9f0e-12b6988661fe, abstract = {{<p>Piezoelectric transducers were attached in a grid on the surface of an 8 x 2 x 0.08 m concrete floor slab. Through an automated, iterative scheme these were used to transmit and receive 50 kHz, continuous, sinusoidal signals, which were sampled by a multi-channel lock-in amplifier. The measured amplitude and phase were used to locate inflicted damage by detecting deviations from baseline measurements, acquired in a reference state. Superficial damage, in the range of centimeter, could easily be detected, even between the transducers placed the furthest apart, and could be located to a grid coordinate on the floor slab.</p>}}, author = {{Fröjd, Patrik and Ulriksen, Peter}}, booktitle = {{8th European Workshop on Structural Health Monitoring, EWSHM 2016}}, isbn = {{9781510827936}}, keywords = {{Continuous wave; Diffuse field; Lock-in amplifier; Structural health monitoring; Ultrasound}}, language = {{eng}}, pages = {{347--356}}, publisher = {{NDT.net}}, title = {{Narrow-band diffuse ultrasonic wavefield measurements in a network of reciprocal transducers for monitoring of a large concrete floor slab}}, volume = {{1}}, year = {{2016}}, }