Stress Response of Magnetic Barkhausen Noise in Submarine Hull Steel: A Comparative Study

The development of magnetic Barkhausen noise methods for rapid detection of residual stress concentrations has implications for integrity assessment of submarine pressure hulls. However, the stress-response of Barkhausen noise in submarine hull steel, HY-80, is complicated by the influence of the ma...

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Bibliographic Details
Published inJournal of nondestructive evaluation Vol. 35; no. 2; pp. 1 - 6
Main Authors Samimi, Arash A., Krause, Thomas W., Clapham, Lynann
Format Journal Article
LanguageEnglish
Published New York Springer US 01.06.2016
Subjects
Barkhausen effect
Characterization and Evaluation of Materials
Classical Mechanics
Control
Dynamical Systems
Engineering
Ferrite
Hulls
Hulls (structures)
Noise
Pearlite
Solid Mechanics
Structural steels
Tensile stress
Vibration
Tensile stress
Non-destructive testing
HY-80 steel
Magnetic Barkhausen noise
Flux control
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Summary:The development of magnetic Barkhausen noise methods for rapid detection of residual stress concentrations has implications for integrity assessment of submarine pressure hulls. However, the stress-response of Barkhausen noise in submarine hull steel, HY-80, is complicated by the influence of the material’s martensitic microstructure. The present work sheds light on the stress-dependent behavior of Barkhausen noise in HY-80 by comparing its signal characteristics with those of more common ferrite/pearlite steels. HY-80 and various ferrite/pearlite steel plates were uni-axially stressed up to and beyond the level for plastic deformation. Barkhausen noise measurements, performed using the same sensor under reproducible flux-controlled magnetization conditions, facilitated a direct comparison of material responses. Results showed that with the application of tensile stress, the Barkhausen noise signal of ferrite/pearlite steels linearly increased, reached a peak value and saturated in the elastic region. By contrast, HY-80 demonstrated a linear increase with tensile stress characterized by a transition from a lower to a seven times higher rate of change for stresses above 200 MPa up to its yield point. The different stress-response of HY-80 was attributed to its martensitic microstructure, which modifies the response of the domain structure under tensile stress conditions.
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ISSN:0195-9298
1573-4862
DOI:10.1007/s10921-016-0348-6