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Record:
=LDR 02991cam a2200421 a 4500
=001 3263573
=005 20160427130326.0
=006 m\\f\\d\\\\
=007 he\amu\\bucu
=008 090722t20092009kina\\s\\\000\0\eng\d
=035 \$a3263573
=040 \$aCaOKQ$beng$cCaOKQ
=100 1$aWhite, Steven Andrew.
=245 12$aA Barkhausen noise testing system for CANDU feeder pipes /$cby Steven Andrew White.
=264 \1$aKingston, Ont. :$b[publisher not identified],$c[2009]
=264 \4$c©2009
=300 \$axxix, 335 leaves :$billustrations
=336 \$atext$btxt$2rdacontent
=337 \$acomputer$bc$2rdamedia
=338 \$aonline resource$bcr$2rdacarrier
=502 \$aPh.D, Physics, Engineering Physics and Astronomy$bQueen's University$c2009
=504 \$aIncludes bibliographical references (leaves 273-281)
=520 3$aA Barkhausen noise (BN) testing system was developed for the non-destructive evaluation (NDE) of residual stresses in CANDU reactor feeder pipes. The system consists of a four-channel arbitrary waveform flux control system (FCS), and the spring-loaded tetrapole prototype (SL4P) BN probe. The combination of the FCS and SL4P was shown to provide repeatable BN measurements on feeder pipe samples, with variations in air gaps between the SL4P poles and the sample from 0.43 mm to 1.29 mm, and typical pickup coil coupling uncertainties for the total BN energy from ±2% to ±7%. Precision for elastic strain estimation in feeder pipes was found to be between ±7 MPa and ±9 MPa in tension, depending on the excitation field configuration, and negligible in compression. Modelling of the BN penetration depth as a function of the excitation field was used to estimate the BN penetration depth between 5 Mum at 300 kHz to a maximum of 500 Mum at 3 kHz. The modelling, engineering, and procedures developed for this BN testing system provide an improved basis for the future advancement of BN testing, and ferromagnetic NDE in general.
=533 \$aCopy 2, microfiche.$bOttawa :$cNational Library of Canada,$d[2011] --$e4 microfiches ; 11 x 15 cm. --$f(Canadian theses = Thèses canadiennes)
=538 \$aMode of access: World Wide Web.
=540 \$aThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.
=500 \$aGMD: electronic resource.
=653 \$aBarkhausen noise.
=653 \$aCANDU feeder pipes.
=653 \$aFerromagnetism.
=653 \$aMagnetic flux.
=653 \$aAnisotropy.
=653 \$aNon-destructive evaluation.
=653 \$aResidual stress.
=710 2$aQueen's University (Kingston, Ont.).$tTheses (Queen's University (Kingston, Ont.))
=710 2$aQueen's University (Kingston, Ont.).$bDepartment of Physics, Engineering Physics and Astronomy.
=830 \0$aCanadian theses.
=902 \$aMARCIVE2013

Record File: 660bb54202193f129adcc8869fe864b8.mrc