Analysis of Barkhausen effect signals in surface-modified magnetic materials using a hysteretic-stochastic model Lo, Chester Kinser, E. Jiles, David Jiles, David
dc.contributor.department Center for Nondestructive Evaluation 2018-02-14T10:08:10.000 2020-06-30T01:26:10Z 2020-06-30T01:26:10Z Sun Jan 01 00:00:00 UTC 2006 2014-08-09 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="" target="_blank"></a>.</p>
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dc.identifier archive/
dc.identifier.articleid 1022
dc.identifier.contextkey 5923206
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath cnde_pubs/23
dc.language.iso en
dc.source.bitstream archive/|||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
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relation.isOrgUnitOfPublication f2b877c3-5654-4c6a-9e64-6c944f9f02b6
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