TY - JOUR
T1 - Wireless surface acoustic wave sensors for displacement and crack monitoring in concrete structures
AU - Perry, M
AU - McKeeman, I
AU - Saafi, M
AU - Niewczas, P
N1 - “This is an author-created, un-copyedited version of an article accepted for publication in Smart Materials and Structures. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0964-1726/25/3/035035
PY - 2016/2/22
Y1 - 2016/2/22
N2 - In this work, we demonstrate that wireless surface acoustic wave devices can be used to monitor millimetre displacements in crack opening during the cyclic and static loading of reinforced concrete structures. Sensors were packaged to extend their gauge length and to protect them against brittle fracture, before being surface-mounted onto the tensioned surface of a concrete beam. The accuracy of measurements was verified using computational methods and opticalfibre strain sensors. After packaging, the displacement and temperature resolutions of the surface acoustic wave sensors were 10 μm and 2°C respectively. With some further work, these devices could be retrofitted to existing concrete structures to facilitate wireless structural health monitoring.
AB - In this work, we demonstrate that wireless surface acoustic wave devices can be used to monitor millimetre displacements in crack opening during the cyclic and static loading of reinforced concrete structures. Sensors were packaged to extend their gauge length and to protect them against brittle fracture, before being surface-mounted onto the tensioned surface of a concrete beam. The accuracy of measurements was verified using computational methods and opticalfibre strain sensors. After packaging, the displacement and temperature resolutions of the surface acoustic wave sensors were 10 μm and 2°C respectively. With some further work, these devices could be retrofitted to existing concrete structures to facilitate wireless structural health monitoring.
KW - concrete crack monitoring
KW - structural health monitoring
KW - surface acoustic wave sensors
KW - wireless sensing
KW - crack opening
KW - reinforced concrete structures
KW - static loading
KW - optical-fibre strain sensors
UR - http://www.scopus.com/inward/record.url?scp=84959432487&partnerID=8YFLogxK
UR - http://iopscience.iop.org/journal/0964-1726
U2 - 10.1088/0964-1726/25/3/035035
DO - 10.1088/0964-1726/25/3/035035
M3 - Article
AN - SCOPUS:84959432487
SN - 0964-1726
VL - 25
JO - Smart Materials and Structures
JF - Smart Materials and Structures
IS - 3
M1 - 035035
ER -