Journal ArticleDOI
Magnetic NDT technique to evaluate fatigue damage
M. B. Shah,M. S. C. Bose +1 more
TLDR
Magnetic hysteresis technique is employed to evaluate fatigue damage in ferromagnetic specimens as discussed by the authors, the changes in the magnetic properties during fatigue loading are measured with the help of a specially fabricated hystresis loop tracer.Abstract:
Magnetic hysteresis technique is employed to evaluate fatigue damage in ferromagnetic specimens. The changes in the magnetic properties during fatigue loading are measured with the help of a specially fabricated hysteresis loop tracer. The measurements are taken with ac magnetizing fields in the Rayleigh region. The changes in magnetic properties are found to be related to the damage by fatigue loading.
Um die Ermudungsschaden ferromagnetischer Proben auszuwerten, wird das Verfahren der magnetischen Hysterese angewendet. Die Anderungen der magnetischen Eigenschaften werden wahrend der Dauerbelastung mit einer speziell fur diesen Zweck angefertigten Hysteresesonde gemessen. Die Mesergebnisse werden im Rayleigh-Bereich mit Hilfe eines Wechselmagnetfeldes registriert. Es wird festgestellt, das die Anderung der magnetischen Eigenschaften mit den durch Dauerbelastung entstandenen Schaden zusammenhangen.read more
Citations
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Journal ArticleDOI
Review of magnetic methods for nondestructive evaluation
TL;DR: A review of magnetic non-destructive evaluation methods can be found in this paper, where the authors present a fairly comprehensive summary of works on Barkhausen effect, magnetoacoustic emission, magtenic hysteresis, residual field and magnetically induced velocity change methods.
Journal ArticleDOI
Assessment of microstructures and mechanical behaviour of metallic materials through non-destructive characterisation
TL;DR: In this paper, the authors discuss the progress made in the application of non-destructive testing (NDT) techniques in evaluating various microstructural features and mechanical properties with emphasis on recent studies.
Journal ArticleDOI
Magnescope: A poratble magnetic inspection system for evaluation of steel structures and components
TL;DR: In this article, a portable magnetic inspection device was developed for nondestructive evaluation of ferromagnetic steel structures and components, consisting of an inspection head, instrumentation for measuring magnetic-field and flux density, and a computer together with the necessary control and data analysis software.
Journal ArticleDOI
Monitoring fatigue damage in materials using magnetic measurement techniques
TL;DR: In this article, the authors measured hysteresis and Barkhausen effect (BE) properties of 0.1 wt% C Fe-C alloys subjected to strain-controlled fatigue at various strain amplitudes.
Journal ArticleDOI
An Integrated Model of Magnetic Hysteresis, the Magnetomechanical Effect, and the Barkhausen Effect
David Jiles,Winnie Kiarie +1 more
TL;DR: In this article, the authors present an integrated model to describe the ferromagnetic hysteresis, magnetomechanical, and Barkhausen properties of magnetic materials and present a conceptual framework linking together these magnetic property measurements with model parameters and to the structure of the material.
References
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Strength of metals and alloys
TL;DR: The paper as discussed by the authors presents the papers given at a conference on the mechanical properties of metals and alloys, including hardening, anisotropy and texture, phase transformations, creep resistance, plasticity, deformations, microstructure, fracture properties, fatigue, wear resistance, temperature effects, stress analysis, and recrystallization.
Journal ArticleDOI
Effect of Lattice Defects on the Magnetization Curve of Ferromagnets
TL;DR: In this article, a theoretical treatment of the action of internal stresses on domain walls and on uniformly magnetized Weiss domains is presented, based on micromagnetics, dislocation theory, and probability theory.
Book ChapterDOI
Microscopic Mechanisms of Metal Fatigue
H. Mughrabi,H. Mughrabi +1 more
TL;DR: In this paper, a review is given of current research on the nature of microscopic mechanisms of metal fatigue, including cyclic hardening and saturation, persistent slip bands in single and multiphase materials, trans-and intercrystalline fatigue crack initiation and propagation and related threshold phenomena.
Journal ArticleDOI
Magnetic Studies of Residual Stress in Iron and Steel Induced by Uniaxial Deformation
TL;DR: In this article, the residual stress in steel after uniaxial plastic deformation was investigated magnetically, and a newly developed magnetic probe was employed to detect the sign and the magnitude of the induced magnetic anisotropy under deformation, and the magnetic yielding phenomenon was observed at the mechanical yield point.
Journal ArticleDOI
Influence of Plastic Deformation on Coercive Field and Initial Susceptibility of Fe‐3.25% Si Alloys
A. H. Qureshi,L. N. Chaudhary +1 more
TL;DR: In this article, measurements were made of the deformation dependence at room temperature of the coercive field Hc and the initial susceptibility χi and the recovery process was investigated during isothermal annealing.