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Investigating the Relationship between Shot-Peening Severity and Fatigue Life of AISI 4140 Steel by Magnetic Barkhausen Method
Date
2018-06-15
Author
Çalışkan, Salim
Gür, Cemil Hakan
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Shot peening process results in compressive residual stresses on the surface which improves the fatigue performance of the components. Fatigue life of several aircraft parts is improved by shot peening. Thus, development of easy, rapid and reliable non-destructive methods for estimation of residual stress, and thus fatigue performance of the components will be very useful for aircraft industry. Recently the magnetic Barkhausen noise (MBN) method has gained importance for non-destructive characterization of ferromagnetic materials. In this study, the correlation between MBN emission and fatigue life of the shot-peened AISI 4140 steel samples was investigated. Various samples having different residual stress state were produced by applying shot peening with different Almen intensities and coverage percentages. After measuring several MBN parameters on the samples, fatigue tests were performed by tensile-tensile cyclic loading. The results showed that there is a linear correlation between MBN emission and fatigue life.
URI
https://hdl.handle.net/11511/80248
http://www.ecndt2018.com/abstract/investigating-the-relationship-between-shot-peening-severity-and-fatigue-life-of-aisi-4140-steel-by-barkhausen-noise-method/
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Investigating the correlation between magnetic Barkhausen noise emission and the fatigue life of shot-peened AISI 4140 steel
Çalışkan, S.; Gür, Cemil Hakan (British Institute of Non-Destructive Testing (BINDT), 2019-01-01)
The performance of engineering components under conditions of fatigue can be improved by shot peening. The location and magnitude of the highest residual compressive stress, the depth of the compression zone and the stability of the residual stress state during cyclic loading are critical parameters for maximum utilisation of the advantageous influence of shot peening on fatigue performance. For accurate assessment of fatigue lifetime, residual stresses should be considered because they are algebraically su...
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Monitoring variation of surface residual stresses in shot peened steel components by the magnetic Barkhausen noise method
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Shot peening is a cold working process by which residual compressive stresses are induced in the surface and near-surface region to increase the fatigue strength and the resistance to stress corrosion cracking This study covers non-destructive evaluation of surface residual stresses in the shot peened steel components by the magnetic Barkhausen noise method For this purpose various sets of steel specimens were prepared by a controlled shot peening process with different intensities impact angles and coverag...
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Savaş, Serdar; Gür, Cemil Hakan; Department of Metallurgical and Materials Engineering (2010)
Shot peening is a cold-working process by which residual compressive stresses are being induced in the surface region to increase the fatigue strength and the resistance to stress-corrosion cracking. This study covers non-destructive measurement of surface residual stresses in the shot-peened steel components by a micro-magnetic technique, named as Magnetic Barkhausen Noise (MBN) method. For this purpose, various low alloy steel specimens were prepared by a controlled shot peening process with different int...
Application of the Contour Method to Determine Axial Residual Stresses in Cold Extruded Steel Rods
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S. Çalışkan and C. H. Gür, “Investigating the Relationship between Shot-Peening Severity and Fatigue Life of AISI 4140 Steel by Magnetic Barkhausen Method,” 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/80248.
