Rapid Ultrasonic Inspection of Army Projectiles

dc.contributor.author Spragins, Len
dc.date 2018-02-13T18:00:32.000
dc.date.accessioned 2020-06-30T01:28:55Z
dc.date.available 2020-06-30T01:28:55Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 1980
dc.date.embargo 2013-11-22
dc.date.issued 1980-07-01
dc.description.abstract <p>The electromagnetic acoustic transducer (EMAT) is a device of particular interest for rapid nondestructive evaluation (NDE) in assembly line applications because of its noncontact mode of operation. Speed is a crucial factor in the performance of an NDE system designed for the inspection of artillery projectiles where production rates may be on the order of several shells per minute. These requirements severely restrict the reliability of conventional ultrasonic techniques that use fluid couplants. A fully automated micro-processor based inpsection system utilizing multiple EMATs to launch shear vertical acoustic waves traveling at 30 degrees with respect to the surface normal is being assembled to inspect 155 mm projectiles for both ID and OD flaws. The system's ability to detect small defects has been demonstrated by locating semi-elliptical EDM notches having surface lengths of 2.5 mm (0.1 in.) and maximum depths of 0.8 mm (0.03 in.).</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/cnde_yellowjackets_1979/86/
dc.identifier.articleid 1083
dc.identifier.contextkey 4847961
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath cnde_yellowjackets_1979/86
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/16130
dc.language.iso en
dc.relation.ispartofseries Interdisciplinary Program for Quantitative Flaw Definition Annual Reports
dc.source.bitstream archive/lib.dr.iastate.edu/cnde_yellowjackets_1979/86/1979_YellowJacket_083_Spragins_RapidUltrasonic.pdf|||Sat Jan 15 02:13:44 UTC 2022
dc.subject.disciplines Materials Science and Engineering
dc.subject.keywords Nondestructive Evaluation
dc.title Rapid Ultrasonic Inspection of Army Projectiles
dc.type article
dc.type.genre 13_new_technology_applications
dspace.entity.type Publication
relation.isSeriesOfPublication 43920e40-d127-4f4c-9087-dc709815fe7f
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