Slow Dynamics Diagnosis of Asphalt Concrete Specimen to Determine Level of Damage caused by Static Low Temperature Conditioning

dc.contributor.author Bekele, Abiy
dc.contributor.author Birgisson, Björn
dc.contributor.author Ryden, Nils
dc.contributor.author Gudmarsson, Anders
dc.date 2018-02-17T22:48:14.000
dc.date.accessioned 2020-06-30T06:53:08Z
dc.date.available 2020-06-30T06:53:08Z
dc.date.issued 2016-01-01
dc.description.abstract <p>The phenomenon of slow dynamics has been observed in a variety of materials which are considered as relatively homogeneous that exhibit nonlinearity due to the presence of defects or cracks within them [1]. Experimental realizations in previous work suggest that slow dynamics can be in response to acoustic drives with relatively larger amplitude as well as rapid change of temperature [2]. Slow dynamics as a nonlinear elastic response of damaged materials is manifested as a sharp drop and then recovery of resonance frequency linearly with logarithmic time. In this work, slow dynamics recovery is intended to be used as a means of identifying and evaluating thermal damage on asphalt concrete specimen. The experimental protocol for measuring slow dynamics is based on the technique of nonlinear resonance spectroscopy and is set up with non-contact excitation using loud speaker and data acquisition tool box of Matlab. Sweeps of frequency with low amplitude are applied in order to probe the specimen at its linear elastic state. The drop and then recovery in resonance frequency is observed after the specimen is exposed to thermal shock. The investigation of this property can help in studying how asphalt concrete behaves with respect to its state of damage.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/qnde/2016/abstracts/180/
dc.identifier.articleid 4973
dc.identifier.contextkey 9252204
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/2016/abstracts/180
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/61928
dc.language.iso en
dc.relation.ispartofseries Review of Progress in Quantitative Nondestructive Evaluation
dc.source.bitstream archive/lib.dr.iastate.edu/qnde/2016/abstracts/180/181_Slow_Dynamics.pdf|||Fri Jan 14 21:35:16 UTC 2022
dc.subject.disciplines Acoustics, Dynamics, and Controls
dc.subject.disciplines Materials Science and Engineering
dc.title Slow Dynamics Diagnosis of Asphalt Concrete Specimen to Determine Level of Damage caused by Static Low Temperature Conditioning
dc.type event
dc.type.genre event
dspace.entity.type Publication
relation.isSeriesOfPublication 289a28b5-887e-4ddb-8c51-a88d07ebc3f3
File
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
181_Slow_Dynamics.pdf
Size:
16.43 KB
Format:
Adobe Portable Document Format
Description: