Nondestructive evaluation of carbon contents and microstructures in plain carbon steel bars by Barkhausen emission

D. H.L. Ng, K. Cheng, K. S. Cho, Z. Y. Ren, X. Y. Ma, S. L.I. Chan

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations

Abstract

Plain carbon steels with different carbon contents have been widely used in industry. There is a pressing need for the nondestructive inspection of steel parts during their fabrication and when they are in service. Barkhausen emission (BE) is one of the nondestructive testing methods that is being used. Recently, we find that the following parameters of the BE signals depended strongly on the carbon content in steel sample, namely, the rising slope of the BE profile, the root-mean-square of the signals, and the half-maximum-width of the profile. The values of these parameters increase as the amount of carbon in the sample increases. The dependence is similar to that of the mechanical hardness on the carbon contents in the samples.

Original languageEnglish
Pages (from-to)2734-2736
Number of pages3
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
StatePublished - Jul 2001
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: 7 Jan 200111 Jan 2001

Keywords

  • Barkhausen emission
  • Carbon
  • Hardness
  • Plain carbon steel

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