Finite Element Study of Lamb Wave Interactions with Holes and Through Thickness Defects in Thin Metal Plates

dc.contributor.author Verdict, G.Bruce
dc.contributor.author Gien, P.
dc.contributor.author Burger, C.
dc.date 2018-02-14T06:39:54.000
dc.date.accessioned 2020-06-30T06:39:00Z
dc.date.available 2020-06-30T06:39:00Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 1992
dc.date.issued 1992
dc.description.abstract <p>TAP/NDE (Thermo-Acousto-Photonic nondestructive evaluation) has been developed to the point where it is possible to confidently explore many different application areas. One area of interest is the inspection of defects around rivet holes and under rivet heads. This problem is of concern not only from a safety point of view in aging aircraft, but also has major economic implications. For example, a heavy “C” check for a Boeing 707 requires the physical removal, inspection and replacement of many thousands of structural fasteners. Of the various types of rivets the round head rivet hole was chosen for this preliminary analysis (Fig. 1). Since it is not known how Lamb waves interact with an in situ rivet, we have chosen to restrict this analysis to the simplest possible case where there is no rivet in the hole. This corresponds to the current practice of removing the rivet and then using eddy current probes to inspect the hole. Our goal is to develop an inspection technique that does not require the physical removal of the rivet. The buried in-plane defect study was undertaken to provide real time, on-line detection of flaws during the processing of the material to prevent these flaws from causing in-service, premature rivet hole degradation. This inspection would prevent flawed materials from entering service.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/qnde/1992/allcontent/12/
dc.identifier.articleid 2901
dc.identifier.contextkey 5800828
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/1992/allcontent/12
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/59914
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/qnde/1992/allcontent/12/1992_Verdict_FiniteElement.pdf|||Fri Jan 14 19:04:16 UTC 2022
dc.source.uri 10.1007/978-1-4615-3344-3_12
dc.subject.disciplines Acoustics, Dynamics, and Controls
dc.title Finite Element Study of Lamb Wave Interactions with Holes and Through Thickness Defects in Thin Metal Plates
dc.type event
dc.type.genre article
dspace.entity.type Publication
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