Structural health monitoring ultrasonic thickness measurement accuracy and reliability of various time-of-flight calculation methods

dc.contributor.author Eason, Thomas
dc.contributor.author Bond, Leonard
dc.contributor.author Lozev, Mark
dc.contributor.author Bond, Leonard
dc.contributor.department Aerospace Engineering
dc.contributor.department Mechanical Engineering
dc.contributor.department Center for Nondestructive Evaluation (CNDE)
dc.date 2020-08-06T01:51:21.000
dc.date.accessioned 2021-02-24T18:24:50Z
dc.date.available 2021-02-24T18:24:50Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.embargo 2017-01-01
dc.date.issued 2016-01-01
dc.description.abstract <p>The accuracy, precision, and reliability of ultrasonic thickness structural health monitoring systems are discussed in-cluding the influence of systematic and environmental factors. To quantify some of these factors, a compression wave ultrasonic thickness structural health monitoring experiment is conducted on a flat calibration block at ambient temperature with forty four thin-film sol-gel transducers and various time-of-flight thickness calculation methods. As an initial calibration, the voltage response signals from each sensor are used to determine the common material velocity as well as the signal offset unique to each calculation method. Next, the measurement precision of the thickness error of each method is determined with a proposed weighted censored relative maximum likelihood analysis technique incorporating the propagation of asymmetric measurement uncertainty. The results are presented as upper and lower confidence limits analogous to the <em>a</em>90/95 terminology used in industry recognized Probability-of-Detection assessments. Future work is proposed to apply the statistical analysis technique to quantify measurement precision of various thickness calculation methods under different environmental conditions such as high temperature, rough back-wall surface, and system degradation with an intended application to monitor naphthenic acid corrosion in oil refineries.</p>
dc.description.comments <p>This proceeding may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This proceeding appeared in Eason, Thomas J., Leonard J. Bond, and Mark G. Lozev. "Structural health monitoring ultrasonic thickness measurement accuracy and reliability of various time-of-flight calculation methods." <em>AIP Conference Proceedings </em>1706, no. 1 (2016): 200003. DOI: <a href="https://doi.org/10.1063/1.4940647" target="_blank">10.1063/1.4940647</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aere_conf/72/
dc.identifier.articleid 1067
dc.identifier.contextkey 18794635
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_conf/72
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/93008
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aere_conf/72/2016_BondLeonard_StructuralHealth.pdf|||Sat Jan 15 01:44:34 UTC 2022
dc.source.uri 10.1063/1.4940647
dc.subject.disciplines Mechanics of Materials
dc.subject.disciplines Structures and Materials
dc.subject.keywords Ultrasonics
dc.subject.keywords Wave mechanics
dc.subject.keywords Industry
dc.subject.keywords Corrosion
dc.subject.keywords Solgels
dc.subject.keywords Thin films
dc.title Structural health monitoring ultrasonic thickness measurement accuracy and reliability of various time-of-flight calculation methods
dc.type article
dc.type.genre conference
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 6d38ab0f-8cc2-4ad3-90b1-67a60c5a6f59
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