Concept Validation and Detectability Limitations for Direct-Sequence Spread-Spectrum Ultrasonic Evaluation System Afzal, Muhammad Russell, Steve Kayani, Jahangir Bae, Sangmin Hoech, Karl Wormley, Samuel 2018-02-14T06:10:08.000 2020-06-30T06:43:33Z 2020-06-30T06:43:33Z Sun Jan 01 00:00:00 UTC 1995 1995
dc.description.abstract <p>Direct-Sequence Spread-Spectrum Ultrasonic Evaluation (DSSSUE) technology has now taken a practical shape [1]. Two independent prototype instruments have been designed with different approaches, a hardware and a software implementation. The instruments record the aggregate acoustic state of the test object and the associated measurement system in the form of “ultrasonic correlation signature” [1,2]. These correlation signatures are compared with the signatures obtained at a later point in time (or from an identical object) to detect if the test object has undergone any change in its geometry, composition and homogeneity etc. The DSSSUE instruments have been undergoing concept validation and detectability verification for the ultrasonic testing of both large structures and small piece parts. This paper reports on the results of these tests, the detectability limitations that apply to practical scenarios are described, including limitations due to processing time, sampling granularity, and transducer placement. Various tradeoffs associated with implementation of the DSSSUE technique are addressed.</p>
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dc.identifier archive/
dc.identifier.articleid 2653
dc.identifier.contextkey 5800242
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/1995/allcontent/292
dc.language.iso en
dc.relation.ispartofseries Review of Progress in Quantitative Nondestructive Evaluation
dc.source.bitstream archive/|||Fri Jan 14 23:14:29 UTC 2022
dc.source.uri 10.1007/978-1-4615-1987-4_292
dc.subject.keywords CNDE
dc.subject.keywords Electrical and Computer Engineering
dc.title Concept Validation and Detectability Limitations for Direct-Sequence Spread-Spectrum Ultrasonic Evaluation System
dc.type event
dc.type.genre article
dspace.entity.type Publication
relation.isSeriesOfPublication 289a28b5-887e-4ddb-8c51-a88d07ebc3f3
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