Towards Nondestructive Evaluation of Cross-Linked Polyethylene (XLPE) Insulation Material in Nuclear Power Plant Cables

dc.contributor.author Byler, Michael
dc.contributor.department Materials Science and Engineering
dc.date 2018-02-18T16:51:15.000
dc.date.accessioned 2020-07-07T05:12:09Z
dc.date.available 2020-07-07T05:12:09Z
dc.date.issued 2017-04-11
dc.description.abstract <p>This talk describes mechanical and electrical properties of cross-linked polyethylene (XLPE) after it is aged both thermally and with gamma radiation. XLPE is commonly used as insulation in nuclear power plant (NPP) cables; as US nuclear power plants reach their initial design life of 40 years, suitable testing methods must be developed to determine the integrity of XLPE insulation. Presently, the end-of-useful life of a cable insulation material is defined when its elongation-at-break (EAB) or breaking strain is reduced to 50 % of its initial value. To develop nondestructive methods of evaluating end-of-useful life, it is useful to seek correlations between electrical properties, some of which are measured nondestructively, and EAB. In this talk, the method and results of elongation tests on tubular XLPE samples extracted from pristine and aged NPP cable, and of dielectric breakdown tests made on similar materials aged from 5 to 25 days will be described. Due to imperfections caused by aging, mechanical and dielectric testing typically yield a wide array of EAB and breakdown voltage values even on the same material. These variations make it difficult to find relationships between the tests, so a procedure for evaluating the quality of their correlation will be presented.</p>
dc.identifier archive/lib.dr.iastate.edu/undergradresearch_symposium/2017/presentations/99/
dc.identifier.articleid 1279
dc.identifier.contextkey 10453794
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath undergradresearch_symposium/2017/presentations/99
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/91868
dc.relation.ispartofseries Symposium on Undergraduate Research and Creative Expression
dc.source.bitstream archive/lib.dr.iastate.edu/undergradresearch_symposium/2017/presentations/99/Session_20IV.G.2_Byler.pptx|||Sat Jan 15 02:39:17 UTC 2022
dc.subject.disciplines Mechanical Engineering
dc.title Towards Nondestructive Evaluation of Cross-Linked Polyethylene (XLPE) Insulation Material in Nuclear Power Plant Cables
dc.type event
dc.type.genre event
dspace.entity.type Publication
relation.isOrgUnitOfPublication bf9f7e3e-25bd-44d3-b49c-ed98372dee5e
relation.isSeriesOfPublication 6730f354-97b8-4408-bad3-7e5c3b2fca9d
thesis.degree.discipline Mechanical Engineering
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