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Stress anisotropy characterisation with the help of Barkhausen effect detector with adjustable magnetic field direction

Abstrakt

In the paper we describe a novel apparatus for the measurement of the Barkhausen noise (BN) angular dependence, which in turn may be indicative of the stress induced anisotropy of magnetic properties. Such dependence can be further used for the stress distribution evaluation. The change of magnetization direction in the material is obtained by varying the magnetic flux density in two perpendicular yokes of the apparatus. We present here, as an example, the application of the apparatus for the determination of the stress distribution in the welded plates. It is to be stressed that, thanks to the very short time of measurements achieved with the presented apparatus, it is very straightforward to obtain the spatial distribution of the stress over relatively big area of the plates in question. The whole measurement process as well as obtained data post processing is computer controlled and a stress distribution (based on 5 × 5 measurement matrix) for a single plate may be determined in less than an hour.

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS nr 48, strony 163 - 170,
ISSN: 1383-5416
Język:
angielski
Rok wydania:
2015
Opis bibliograficzny:
Piotrowski L., Chmielewski M., Augustyniak B., Maciakowski P., Prokop K.: Stress anisotropy characterisation with the help of Barkhausen effect detector with adjustable magnetic field direction// INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS. -Vol. 48, nr. 2,3 (2015), s.163-170
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.3233/jae-151983
Weryfikacja:
Politechnika Gdańska

wyświetlono 105 razy

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