Non-Contact Excitation of Fundamental Resonance Frequencies of an Asphalt Concrete Specimen
2015 (English)In: AIP Conference Proceedings, 2015, Vol. 1650, 1401-1408 p.Conference paper (Refereed)
Impact hammer and non-contact speaker excitation were applied to an asphalt concrete, a PVC-U and a concrete specimen to measure the fundamental longitudinal resonance frequency at different strain levels. The impact and the non-contact excitation methods resulted in similar resonance frequencies for the undamaged asphalt concrete and for the PVC-U specimen. However, the two excitation approaches gave different results for the concrete specimen, which was shown to have a nonlinear response to increasing strain levels. A reduction and a following recovery of the resonance frequency of the asphalt concrete were shown after the specimen was exposed to a small amount of damage. However, no fast nonlinear dynamics were observed for the asphalt concrete through the speaker measurements.
Place, publisher, year, edition, pages
2015. Vol. 1650, 1401-1408 p.
, AIP Conference Proceedings, ISSN 0094-243X ; 1650
IdentifiersURN: urn:nbn:se:kth:diva-155905ISI: 000354938100166ISBN: 978-0-7354-1292-7OAI: oai:DiVA.org:kth-155905DiVA: diva2:763290
41th Annual Review of Progress in Quantitative Nondestructive Evaluation, Boise, USA
QC 201411172014-11-142014-11-142015-08-18Bibliographically approved