Point-Source/Point-Receiver Materials Testing
dc.contributor.author | Sachse, Wolfgang | |
dc.contributor.author | Kim, Kwang Yul | |
dc.date | 2018-02-14T02:38:40.000 | |
dc.date.accessioned | 2020-06-30T06:32:33Z | |
dc.date.available | 2020-06-30T06:32:33Z | |
dc.date.copyright | Thu Jan 01 00:00:00 UTC 1987 | |
dc.date.issued | 1987 | |
dc.description.abstract | <p>Conventional measurements in the ultrasonic testing of materials, when used as the basis of a materials characterization procedure, typically rely on one or two piezoelectric transducers operating as source and receiver, attached to a specimen to launch and detect ultrasonic waves in the object to be characterized. Measurements of signal arrival time (or velocity) and amplitude (or attenuation), possibly as a function of frequency, are then correlated with the composition and the macro- and micro-structure of the material, which may include voids, flaws and inclusions distributed through a region of the material. While relative measurements of the time-of-flight and ultrasonic amplitudes do not! present extraordinary measurement challenges, absolute measurements do. It is unfortunate that absolute quantities are often required since they are difficult to obtain reliably with a conventional piezoelectric transducer-based ultrasonic system. For this reason, a considerable effort over the past decade has been undertaken to develop and improve non-contact methods for generating and detecting ultrasonic signals in materials. However, a limiting factor of all the existing non-contact measurement systems is the care required for their use and their reduced sensitivity in comparison to-those utilizing piezoelectric transducers.</p> | |
dc.format.mimetype | application/pdf | |
dc.identifier | archive/lib.dr.iastate.edu/qnde/1987/allcontent/36/ | |
dc.identifier.articleid | 1156 | |
dc.identifier.contextkey | 5772823 | |
dc.identifier.s3bucket | isulib-bepress-aws-west | |
dc.identifier.submissionpath | qnde/1987/allcontent/36 | |
dc.identifier.uri | https://dr.lib.iastate.edu/handle/20.500.12876/59004 | |
dc.language.iso | en | |
dc.relation.ispartofseries | Review of Progress in Quantitative Nondestructive Evaluation | |
dc.source.bitstream | archive/lib.dr.iastate.edu/qnde/1987/allcontent/36/1987_Sachse_PointSource.pdf|||Fri Jan 14 23:46:15 UTC 2022 | |
dc.source.uri | 10.1007/978-1-4613-1893-4_36 | |
dc.subject.disciplines | Acoustics, Dynamics, and Controls | |
dc.subject.disciplines | Applied Mechanics | |
dc.title | Point-Source/Point-Receiver Materials Testing | |
dc.type | event | |
dc.type.genre | article | |
dspace.entity.type | Publication | |
relation.isSeriesOfPublication | 289a28b5-887e-4ddb-8c51-a88d07ebc3f3 |
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