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Titolo:
Thin-skin AC field in anisotropic rectangular bar and ACPD stress measurement
Autore:
Chen, K; Brennan, FP; Dover, WD;
Indirizzi:
MSL Engn Ltd, Ascot SL5 9NQ, Berks, England MSL Engn Ltd Ascot Berks England SL5 9NQ d, Ascot SL5 9NQ, Berks, England Univ London Univ Coll, Dept Mech Engn, NDE Ctr, London WC1E 7JE, England Univ London Univ Coll London England WC1E 7JE , London WC1E 7JE, England
Titolo Testata:
NDT & E INTERNATIONAL
fascicolo: 5, volume: 33, anno: 2000,
pagine: 317 - 323
SICI:
0963-8695(200007)33:5<317:TAFIAR>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTROMAGNETIC-FIELDS;
Keywords:
magnetostrictive anisotropy; uniform AC field; electromagnetic stress model; ACPD stress measurement; rectangular mild steel bar;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Chen, K MSL Engn Ltd, MSL House,5-7 High St, Ascot SL5 9NQ, Berks, EnglandMSL Engn Ltd MSL House,5-7 High St Ascot Berks England SL5 9NQ and
Citazione:
K. Chen et al., "Thin-skin AC field in anisotropic rectangular bar and ACPD stress measurement", NDT E INT, 33(5), 2000, pp. 317-323

Abstract

This paper presents some theoretical and experimental studies on the magnetostrictive anisotropy (stress-induced anisotropy) in a long rectangular steel bar that were recently conducted at the University College London. In order to obtain the thin-skin field in the anisotropic bar, the validity of the general boundary conditions at the interface between the conductor and the exterior (air), which were established in earlier studies for isotropicmedia, were firstly examined, The thin-skin held solution of Zhou and Lewis [Zhou J, Lewis AM. Thin-skin electromagnetic fields around a rectangular conductor bar, Journal of Physics D: Applied Physics, 1994;27:419-425] for the isotropic bar was then extended to include magnetic anisotropy. Using the extended thin-skin field solution, an electromagnetic stress model has been presented by relating the stress level to a quantity that can be used as a measure of the amount of magnetic anisotropy in the material. For the application of this model, experimental stress measurements on mild steel rectangular bars with different dimensions were conducted based on the Alternating Current Potential Difference (ACPD) technique. The ACPD stress measurement results showed that the theoretical stress model could predict the stress values with the calibration of a magnetic anisotropic parameter. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 01:58:05