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Continuous wave measurements in a network of transducers for structural health monitoring of a large concrete floor slab

Fröjd, Patrik LU and Ulriksen, Peter LU (2016) In Structural Health Monitoring 15(4). p.403-412
Abstract
Local, superficial damage was detected and localized on an 8 × 2-m concrete floor slab using a structural health monitoring system. A total of 30 piezoelectric transducers, placed in a grid, transmitted and received continuous ultrasonic waves that were measured using a lock-in amplifier. Tomography was used to create images from the measured amplitude and phase of the continuous waves between all possible transducer pairs. The location of damage induced by impact hits was visible in the resulting images. The signals could easily be detected even between the most distant transducer pairs, indicating the possibility of monitoring even very large concrete structures.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Structural Health Monitoring
volume
15
issue
4
pages
10 pages
publisher
SAGE Publications Inc.
external identifiers
  • scopus:84984801399
  • wos:000382979100003
ISSN
1475-9217
DOI
10.1177/1475921716642139
language
English
LU publication?
yes
id
e65293bc-d994-4eb3-81e2-500b4d68dc3b
date added to LUP
2016-05-04 13:14:04
date last changed
2017-01-29 04:29:36
@article{e65293bc-d994-4eb3-81e2-500b4d68dc3b,
  abstract     = {Local, superficial damage was detected and localized on an 8 × 2-m concrete floor slab using a structural health monitoring system. A total of 30 piezoelectric transducers, placed in a grid, transmitted and received continuous ultrasonic waves that were measured using a lock-in amplifier. Tomography was used to create images from the measured amplitude and phase of the continuous waves between all possible transducer pairs. The location of damage induced by impact hits was visible in the resulting images. The signals could easily be detected even between the most distant transducer pairs, indicating the possibility of monitoring even very large concrete structures.},
  author       = {Fröjd, Patrik and Ulriksen, Peter},
  issn         = {1475-9217},
  language     = {eng},
  month        = {07},
  number       = {4},
  pages        = {403--412},
  publisher    = {SAGE Publications Inc.},
  series       = {Structural Health Monitoring},
  title        = {Continuous wave measurements in a network of transducers for structural health monitoring of a large concrete floor slab},
  url          = {http://dx.doi.org/10.1177/1475921716642139},
  volume       = {15},
  year         = {2016},
}