Non-contact surface wave testing of pavements: comparing a rolling microphone array with accelerometer measurements
2016 (English)In: Smart Structures and Systems, ISSN 1738-1584, E-ISSN 1738-1991, Vol. 17, no 1, 1-15 p.Article in journal (Refereed) Published
Rayleigh wave velocity along a straight survey line on a concrete plate is measured in order to compare different non-destructive data acquisition techniques. Results from a rolling non-contact data acquisition system using air-coupled microphones are compared to conventional stationary accelerometer results. The results show a good match between the two acquisition techniques. Rolling measurements were found to provide a fast and reliable alternative to stationary system for stiffness determination. However, the non-contact approach is shown to be sensitive to unevenness of the measured surface. Measures to overcome this disadvantage are discussed and demonstrated using both forward and reverse rolling measurements.
Place, publisher, year, edition, pages
2016. Vol. 17, no 1, 1-15 p.
Non-destructive testing, seismic testing, Lamb waves, surface waves, material characterization
IdentifiersURN: urn:nbn:se:kth:diva-155908DOI: 10.12989/sss.2016.17.1.001ISI: 000373916400002ScopusID: 2-s2.0-84957577517OAI: oai:DiVA.org:kth-155908DiVA: diva2:763329
QC 201604122014-11-142014-11-142016-05-13Bibliographically approved