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Non-contact surface wave testing of pavements: comparing a rolling microphone array with accelerometer measurements
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  • Journal title : Smart Structures and Systems
  • Volume 17, Issue 1,  2016, pp.1-15
  • Publisher : Techno-Press
  • DOI : 10.12989/sss.2016.17.1.001
 Title & Authors
Non-contact surface wave testing of pavements: comparing a rolling microphone array with accelerometer measurements
Bjurstrom, Henrik; Ryden, Nils; Birgisson, Bjorn;
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.
non-destructive testing;seismic testing;Lamb waves;surface waves;material characterization;
 Cited by
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Detecting the thickness mode frequency in a concrete plate using backward wave propagation, The Journal of the Acoustical Society of America, 2016, 139, 2, 649  crossref(new windwow)
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