Supercapacitors electropulsing method for improvement the fatigue resistance of the austenitic steel sheets
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Abstract
The purpose of the study was to investigate the effect of the use of high density pulsed current (using superca- pacitor) on the fatigue life of the tested specimens. For this purpose, experimental analyses were carried out for a two group of samples: without current pulsation and after cur- rent exposure. The results of the study for AISI 304 steel (0.04% C, 1.2% Mn, 18.16% Cr, 8% Ni, 0.335% Mo, 0.041% Si) for fatigue strength were presented. The experiments were performed on single edge notched tensile specimen (SENT) with U-shaped electro-drilling (W = 15 mm, t = 0.5 mm, a0 = 2.5 mm). Positive current pulses with different dura- tions and frequencies were used. The tests were carried out on a hydraulic pulsator MTS 810, controlled by a constant force amplitude Fmax = 1100 N. Obtained initial results encourage for further analyzes and studies with a number of factors that allow the use of high current electricity in the context of increasing the fatigue life of tools or prod- ucts obtained by plastic metal forming.
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References
Zimniak Z., Hankiewicz S.: Badania magnetyczne procesów tłoczenia blach, Obróbka Plastyczna Metali 17, 2006, s. 25-31.
Kaleta J., Lewandowski D., Wiewiórski P.: 3D Magnetovision Scanner as a Tool for Investigation of Magnetomechanical Principles, Solid State Phenomena, Vol. 154, 2009, pp. 181-186.
Kaleta J., Wiewiórski P.: Construction of magnetic scanner for application in experimental mechanics, materiały konferencyjne 26th Danubia Adria Sympo- sium on Advances in Experimental Mechanics, 23-26.09.2009, Leoben, Austria.
Cohen M.H., Barrett C.S.: Physical Review B 95, 1954, pp. 1094-1095.
Machlin E.S.: Journal of applied physics 30, 1959, pp. 1109-1110.
Troitskii O.A, Likhtman V.I.: Akademiya nauk SSSR 148, 1963, pp. 332-334.
Song H., Wang Z.J.: Microcrack healing and local recrystallization in pre-deformed sheet by high density electropulsing, Materials Science and Engineering: A, Volume 490, Issues 12, 25 August 2008, Pages 1-6, ISSN 0921-5093, http:// dx.doi.org/10.1016/j.msea.2007.12.037.
Pilkey D.: Stress concentration factors. A Wiley-Interscience Publication, 1997.