Experimental study of the acoustoelastic Lamb wave in thin plates

dc.contributor.author Pei, Ning
dc.contributor.author Bond, Leonard
dc.contributor.department Aerospace Engineering
dc.contributor.department Mechanical Engineering
dc.date 2020-07-03T04:20:30.000
dc.date.accessioned 2020-07-06T21:25:26Z
dc.date.available 2020-07-06T21:25:26Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.embargo 2017-01-01
dc.date.issued 2016-01-01
dc.description.abstract <p>Many factors can cause residual stresses in industry, like rolling, welding and coating. Residual stresses can have both benefits and shortcomings on components, so it is important to find the residual stresses out and enhance its benefits part and get rid of its harmful part. There are many methods for residual stresses detection and ultrasonic method turns out to be a good one for it is nondestructive, relative cheap and portable. The critically refracted longitudinal (LCR) wave is widely used for it is regarded most sensitive to stress and less sensitive to texture which can influence detection results. Ultrasonic methods for residual stresses detection are based on time of flight (TOF) measurement, but because the measurement should reach nanosecond to show stress change, there are many other factors that can influence TOF, like temperature, texture of the components and even the thickness of the couplant. So increasing the TOF’s sensitivity to stress is very important. In this paper the relationships between velocity and frequency are studied experimentally[6] for different Lamb modes, under various stress loadings. The result shows that the sensitivity of different modes various a lot, the A1 mode is the most sensitivity, compared to S0, S1 and A0 modes; if the force is added to 100 MPa, the change stress of A1 mode can be as large to 80 m/s, which is about 10 times more sensitive than the traditional bulk wave. This makes it as a good choice for residual stress detection.</p>
dc.description.comments <p>This proceeding may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This proceeding appeared in Pei, Ning, and Leonard J. Bond. "Experimental study of the acoustoelastic Lamb wave in thin plates." <em>AIP Conference Proceedings </em>1706, no. 1 (2016): 070009. DOI: <a href="https://doi.org/10.1063/1.4940527" target="_blank">10.1063/1.4940527</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aere_conf/57/
dc.identifier.articleid 1055
dc.identifier.contextkey 18346216
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_conf/57
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/91502
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aere_conf/57/2016_BondLeonard_ExperimentalStudy.pdf|||Sat Jan 15 00:59:15 UTC 2022
dc.source.uri 10.1063/1.4940527
dc.subject.disciplines Metallurgy
dc.subject.disciplines Structural Materials
dc.subject.keywords Lamb waves
dc.subject.keywords Industry
dc.subject.keywords Welding
dc.subject.keywords Acoustical effects
dc.title Experimental study of the acoustoelastic Lamb wave in thin plates
dc.type article
dc.type.genre conference
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 047b23ca-7bd7-4194-b084-c4181d33d95d
relation.isOrgUnitOfPublication 6d38ab0f-8cc2-4ad3-90b1-67a60c5a6f59
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