Testing for Nongaussian Fluctuations in Grain Noise
dc.contributor.author | Neal, Steven | |
dc.contributor.author | Donohoe, Kevin | |
dc.date | 2018-02-14T07:08:30.000 | |
dc.date.accessioned | 2020-06-30T06:44:16Z | |
dc.date.available | 2020-06-30T06:44:16Z | |
dc.date.copyright | Mon Jan 01 00:00:00 UTC 1996 | |
dc.date.issued | 1996 | |
dc.description.abstract | <p>In ultrasonic nondestructive evaluation (NDE), grain noise corrupts the scattered wave field from a flaw in a polycrystalline material. Many probabilistic approaches associated with flaw detection and characterization utilize stochastic models in which grain noise is assumed uncorrected and zero-mean Gaussian distributed. Typically, the Gaussian assumptions is justified via heuristic arguments based on the central limit theorem. This paper presents the kurtosis test and the Shapiro-Wilk W test as methods to quantitatively test time domain noise ensembles for deviations from Gaussian statistics. We will establish, through the application of these hypothesis tests to grain noise, a quantitative tool which can be used to consider “how Gaussian” grain noise signals must be for Gaussian noise based signal processing procedures to out perform alternative approaches.</p> | |
dc.format.mimetype | application/pdf | |
dc.identifier | archive/lib.dr.iastate.edu/qnde/1996/allcontent/103/ | |
dc.identifier.articleid | 3147 | |
dc.identifier.contextkey | 5807210 | |
dc.identifier.s3bucket | isulib-bepress-aws-west | |
dc.identifier.submissionpath | qnde/1996/allcontent/103 | |
dc.identifier.uri | https://dr.lib.iastate.edu/handle/20.500.12876/60664 | |
dc.language.iso | en | |
dc.relation.ispartofseries | Review of Progress in Quantitative Nondestructive Evaluation | |
dc.source.bitstream | archive/lib.dr.iastate.edu/qnde/1996/allcontent/103/1996_Neal_TestingNongaussian.pdf|||Fri Jan 14 18:17:52 UTC 2022 | |
dc.source.uri | 10.1007/978-1-4613-0383-1_103 | |
dc.subject.disciplines | Signal Processing | |
dc.title | Testing for Nongaussian Fluctuations in Grain Noise | |
dc.type | event | |
dc.type.genre | article | |
dspace.entity.type | Publication | |
relation.isSeriesOfPublication | 289a28b5-887e-4ddb-8c51-a88d07ebc3f3 |
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