Supercapacitors electropulsing method for improvement the fatigue resistance of the austenitic steel sheets

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Zbigniew Zimniak
Grzegorz Lesiuk
Wojciech Wiśniewski

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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How to Cite
[1]
Z. Zimniak, G. Lesiuk, and W. Wiśniewski, “Supercapacitors electropulsing method for improvement the fatigue resistance of the austenitic steel sheets”, Weld. Tech. Rev., vol. 90, no. 2, Feb. 2018.
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Original Articles

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