Spherically focused capacitive-film, air-coupled ultrasonic transducer

dc.contributor.author Song, Junho
dc.contributor.author Holland, Stephen
dc.contributor.author Chimenti, Dale
dc.contributor.author Holland, Stephen
dc.contributor.department Aerospace Engineering
dc.date 2018-02-13T03:09:15.000
dc.date.accessioned 2020-06-29T22:46:11Z
dc.date.available 2020-06-29T22:46:11Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2006
dc.date.embargo 2015-03-18
dc.date.issued 2006-01-24
dc.description.abstract <p>A spherically focused no mirrors capacitive-film, air-coupled ultrasonic transducer, constructed using a spherically deformed backplate and metalized polymer film, has been designed, fabricated, and its performance characterized. A 1 cm diameter device has a center frequency of 805 kHz and a 6 dB bandwidth of 760 kHz. Comparisons of field strength in the focal zone with theoretical calculations for a spherically focused piston show that the device achieves diffraction-limited focusing. The nominal focal point of 25 mm lies within 0.01 mm of the calculated value for this device.</p>
dc.description.comments <p>This article was originally published in <em>Journal of the Acoustical Society of America </em>119, no. 2 (2006): EL1–EL6, doi:<a href="http://dx.doi.org/10.1121/1.2152293" target="_blank">10.1121/1.2152293.</a></p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aere_pubs/7/
dc.identifier.articleid 1005
dc.identifier.contextkey 3469233
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_pubs/7
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/2072
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aere_pubs/7/spherically_focused.pdf|||Sat Jan 15 01:31:48 UTC 2022
dc.source.uri 10.1121/1.2152293
dc.subject.disciplines Aerospace Engineering
dc.subject.keywords nondestructive testing
dc.subject.keywords nondestructive evaluation
dc.title Spherically focused capacitive-film, air-coupled ultrasonic transducer
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication dea444ce-079d-483e-8db1-c33100203381
relation.isOrgUnitOfPublication 047b23ca-7bd7-4194-b084-c4181d33d95d
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