Application of hysteresis modeling to magnetic techniques for monitoring biaxial stress

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A probe, consisting of two excitation coils and a detection coil wrapped around a core with a Hall probe between the pole pieces, has been used to measure indirectly the influence of biaxial stress on the magnetic properties of a ferromagnetic specimen, in this case annealed SAE-4130 steel. Properties measured indirectly included remanence, coercivity, and first, third and fifth harmonic amplitudes. The properties were extracted from the voltage measured across the detection coil and incorporate the magnetic influence of the soft iron core, but with the effect of air gap variation between pole piece and sample kept to a controlled ... continued below

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9 p.

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Sablik, M.J.; Burkhardt, G.L. & Kwun, H. December 31, 1993.

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Description

A probe, consisting of two excitation coils and a detection coil wrapped around a core with a Hall probe between the pole pieces, has been used to measure indirectly the influence of biaxial stress on the magnetic properties of a ferromagnetic specimen, in this case annealed SAE-4130 steel. Properties measured indirectly included remanence, coercivity, and first, third and fifth harmonic amplitudes. The properties were extracted from the voltage measured across the detection coil and incorporate the magnetic influence of the soft iron core, but with the effect of air gap variation between pole piece and sample kept to a controlled range. Results were compared to a micromagnetic model for the effect of biaxial stress on hysteresis and on magnetic properties. The micromagnetic model is a modified version of a model previously employed by Schneider et al. The experimental remanence variation due to biaxial stress compared very well to the predictions of the model. Furthermore, the model predict,s and experiment bears out, that the remanence with the field along one stress axis minus the remanence with the field along the other stress axis falls in a straight-line band of values when plotted against the difference of the two stresses. This suggests a possible NDE technique for detecting differences in biaxial stresses at a given location in a steel specimen.

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9 p.

Notes

OSTI as DE99002444

Source

  • 11. symposium on energy engineering sciences, Argonne, IL (United States), 3-5 May 1993

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  • Other: DE99002444
  • Report No.: CONF-9305134--5
  • Grant Number: FG05-91ER14180
  • DOI: 10.2172/335186 | External Link
  • Office of Scientific & Technical Information Report Number: 335186
  • Archival Resource Key: ark:/67531/metadc684466

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  • December 31, 1993

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Nov. 6, 2015, 2:10 p.m.

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Sablik, M.J.; Burkhardt, G.L. & Kwun, H. Application of hysteresis modeling to magnetic techniques for monitoring biaxial stress, report, December 31, 1993; United States. (digital.library.unt.edu/ark:/67531/metadc684466/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.