Analysis of Barkhausen effect signals in surface-modified magnetic materials using a hysteretic-stochastic model

dc.contributor.author Lo, Chester
dc.contributor.author Kinser, E.
dc.contributor.author Jiles, David
dc.contributor.author Jiles, David
dc.contributor.department Center for Nondestructive Evaluation
dc.date 2018-02-14T10:08:10.000
dc.date.accessioned 2020-06-30T01:26:10Z
dc.date.available 2020-06-30T01:26:10Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2006
dc.date.embargo 2014-08-09
dc.date.issued 2006-01-01
dc.description.abstract <p>The effects of microstructural variations with depth on Barkhausen effect (BE) signals in surface-modified ferrous materials have been studied through measurements and simulations based on a hysteretic-stochastic model. The BE signals measured from an unhardened sample show a peak near zero field. In contrast, the BE signals in surface-hardened samples with different case depths exhibit low-amplitude pulses near zero field and a peak at a high reverse field, which are attributed to irreversible magnetization processes in the soft core and the hardened surface layer, respectively. Theoretical analysis showed that the model parameters k and ξ, which describe the domain-wall pinning strength and the range of interaction of a domain wall with pinning sites, respectively, are related to each other as ξ=a ρ−1/2=b/k via the pinning site density ρ, where a and b are constants. The relationship was used to simulate BE signals of the surface-hardened samples as a sum of signals generated at different depths by taking into account signal attenuation due to eddy current shielding. The simulated results were found to exhibit the general features observed in the experimental results.</p>
dc.description.comments <p>The following article appeared in <em>Journal of Applied Physics</em> 99 (2006): 08B705 and may be found at <a href="http://dx.doi.org/10.1063/1.2163272" target="_blank">http://dx.doi.org/10.1063/1.2163272</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/cnde_pubs/23/
dc.identifier.articleid 1022
dc.identifier.contextkey 5923206
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath cnde_pubs/23
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/15741
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/cnde_pubs/23/2006_Lo_AnalysisBarkhausen.pdf|||Fri Jan 14 22:45:36 UTC 2022
dc.source.uri 10.1063/1.2163272
dc.subject.keywords Surface hardening
dc.subject.keywords Domain walls
dc.subject.keywords Magnetic hysteresis
dc.subject.keywords Materials analysis
dc.subject.keywords Barkhausen effects
dc.title Analysis of Barkhausen effect signals in surface-modified magnetic materials using a hysteretic-stochastic model
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication cb9622ce-98bb-47c3-bc98-8ac772e1c44e
relation.isOrgUnitOfPublication f2b877c3-5654-4c6a-9e64-6c944f9f02b6
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