Journal ArticleDOI
Microstructural transformation of a rail surface induced by severe thermoplastic deformation and its non-destructive monitoring via Barkhausen noise
Miroslav Neslušan,Jakub Čížek,K. Zgútová,Pavel Kejzlar,J. Šramek,Jiří Čapek,Petr Hruška,Oksana Melikhova +7 more
TLDR
In this article, a rail cyclically loaded during 20 years of traffic was examined by combination of several non-destructive techniques with high sensitivity to surface damage, namely positron annihilation spectroscopy, X-ray line profile analysis and magnetic Barkhausen noise.About:
This article is published in Wear.The article was published on 2018-05-15. It has received 15 citations till now. The article focuses on the topics: Barkhausen effect & Surface integrity.read more
Citations
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Journal ArticleDOI
Micro-macro characteristics between domain wall motion and magnetic Barkhausen noise under tensile stress
TL;DR: In this article, a correlation model between domain wall motion and MBN under tensile stress is established and promoted, and root mean square (RMS) and mean value are extracted from both DW motion velocity (OF value) and the MBN signal to quantify the correlation between micro and macro magnetic parameters.
Journal ArticleDOI
Non-destructive monitoring of corrosion extent in steel rope wires via Barkhausen noise emission
TL;DR: In this paper, a systematic study of magnetic non-destructive evaluation of corrosion attack in rope wires via Barkhausen noise emission was presented, where wires of variable corrosion extent were measured and the correlation between the corrosion depth and BarkhausEN noise parameters was analyzed.
Journal ArticleDOI
Non-destructive evaluation of the railway wheel surface damage after long-term operation via Barkhausen noise technique
TL;DR: In this article, the authors reported the non-destructive evaluation of railway wheels via the Barkhausen noise technique across the wheel width and found that the condition of the wheel surface was altered remarkably due to real and long-term wheel operation.
Journal ArticleDOI
Barkhausen noise emission in tool steel X210Cr12 after semi-solid processing
TL;DR: In this article, the magnetic Barkhausen noise in tool steel X210Cr12 after semi-solid forging has been investigated and it has been shown that severe non-homogeneity can be found across the sample due to exerted load concentration in the centre of the sample.
Journal ArticleDOI
Non-Destructive Evaluation of Steel Surfaces after Severe Plastic Deformation via the Barkhausen Noise Technique
Miroslav Neslušan,Libor Trško,Peter Minárik,Jiří Čapek,Jozef Bronček,Filip Pastorek,Jakub Čížek,Jan Moravec +7 more
TL;DR: In this paper, a non-destructive evaluation of surfaces after severe shot peening via the Barkhausen noise technique was performed, where residual stresses and the corresponding Almen intensity, as well as microstructure alterations, were correlated with the noise signal and its extracted features.
References
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Journal ArticleDOI
Interaction of positron beams with surfaces, thin films, and interfaces
Peter J. Schultz,Kelvin G. Lynn +1 more
TL;DR: In this article, a review of advances in the study of solid surfaces and thin films using variable-energy positron beams is presented, with more emphasis on the most recent measurements and interpretations than on the chronology of various developments.
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The contrast factors of dislocations in cubic crystals: the dislocation model of strain anisotropy in practice
TL;DR: In this paper, a simple procedure for the experimental determination of C¯ has been worked out, enabling the determination of the character of the dislocations in terms of a simple parameter q. The C¯ factors and q parameters were parametrized by simple analytical functions, which can be used in a straightforward manner in numerical analyses, as e.g. in Rietveld structure refinement procedures.
Journal ArticleDOI
Whole powder pattern modelling.
Paolo Scardi,Matteo Leoni +1 more
TL;DR: A new approach for the modelling of diffraction patterns without using analytical profile functions is described and tested on ball milled f.
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Increased Elemental Specificity of Positron Annihilation Spectra.
TL;DR: It is shown that the high-momentum part of the Doppler-broadened annihilation spectra can be used to distinguish different elements, and the new approach adds increased elemental specificity to the PAS technique, and is useful in studying the elemental variations around a defect site.
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Vacancies and carbon impurities in α - iron: Electron irradiation
TL;DR: In this paper, it was shown that in pure iron monovacancies are mobile at stage III around 220 K causing vacancy clustering into small three-dimensional agglomerates.