Thermal aging studies and lifetime prediction of commercial filled Ethylene Propylene Rubber (EPR) cable insulation

dc.contributor.advisor Nicola Bowler
dc.contributor.author Sriraman, Aishwarya
dc.contributor.department Materials Science and Engineering
dc.date 2021-01-16T18:25:53.000
dc.date.accessioned 2021-02-25T21:39:39Z
dc.date.available 2021-02-25T21:39:39Z
dc.date.copyright Tue Dec 01 00:00:00 UTC 2020
dc.date.embargo 2022-01-07
dc.date.issued 2020-01-01
dc.description.abstract <p>There are over 600 miles of power cable installed in a typical nuclear power plant. Degradation due to thermal and radiation damage of cable insulation has been identified as one of the key factors that contribute to the loss of performance and ultimate failure of the cable. A critical aspect of cable health monitoring is to understand the nature of degradation and develop aging models to predict the service lifetime of the insulation. In this work, thermal degradation in a commercial grade of ethylene propylene rubber (EPR), a cable insulation material used extensively in nuclear power plants, is assessed under accelerated aging conditions. Characterization of thermally aged EPR is performed by measuring macroscopic changes in thermal, electrical and mechanical properties as a function of thermal aging time and temperature. Two kinetic models are developed to estimate the remaining useful life of EPR based on measured changes in thermal and electrical properties, respectively. Finally, the degradation characteristics of EPR when aged in a jacketed cable configuration alongside a chlorinated polyethylene (CPE) jacket is examined and changes in electrical properties as a function of thermal aging as investigated for EPR in the cable geometry by and interdigital capacitive electrode (IDC).</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/etd/18408/
dc.identifier.articleid 9415
dc.identifier.contextkey 21104864
dc.identifier.doi https://doi.org/10.31274/etd-20210114-143
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/18408
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/94560
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/etd/18408/Sriraman_iastate_0097E_19200.pdf|||Fri Jan 14 21:41:41 UTC 2022
dc.subject.keywords Chlorinated Polyethylene
dc.subject.keywords Ethylene Propylene Rubber
dc.subject.keywords Lifetime Prediction
dc.subject.keywords Thermal Degradation
dc.title Thermal aging studies and lifetime prediction of commercial filled Ethylene Propylene Rubber (EPR) cable insulation
dc.type article
dc.type.genre thesis
dspace.entity.type Publication
relation.isOrgUnitOfPublication bf9f7e3e-25bd-44d3-b49c-ed98372dee5e
thesis.degree.discipline Materials Scienceand Engineering
thesis.degree.level thesis
thesis.degree.name Doctor of Philosophy
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