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Browsing University of Hertfordshire by Author "Stepanov, G.V."
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Effect of a high-density current pulse on the relaxation of shear stresses
Stepanov, G.V.; Babutskyi, Anatolii; Pakhotnykh , V.P. (2008)The procedure and several results of experimental studies on the high-density current pulse-induced relaxation of shear stresses are presented. A significant nonthermal current effect on shear strain kinetics has been ... -
Effect of a pulsed electromagnetic field on stress relaxation in concentrator-containing flat specimens
Stepanov, G.V.; Gromov, V.E.; Olisov, A.N.; Fedorchuk, V.A.; Babutskyi, Anatolii (2012)Experimental results of evaluating the pulsed electromagnetic field effect on tensile stress relaxation in specimens with hole a concentrator are presented. The pulsed electromagnetic field is shown to induce local inelastic ... -
The effect of the pulse electric current treatment on residual stresses arising in grinding
Stepanov, G.V.; Babutskyi, Anatolii; Mameev, I.A. (2009)We show experimentally that the passing of a pulse electric current through a strip of stainless steel with a surface layer containing grinding-induced tensile stresses substantially reduces their level. In this case, the ... -
Effect of transient heating of the outer surface of a radial crack-containing ring specimen on its brittle fracture resistance
Stepanov, G.V.; Kotlyarenko, A.A.; Babutskyi, Anatolii; Zhmaka, V.N. (2012-07)Experimental studies on the effect of transient heating of the outer surface of radial crack-containing ring specimens from 45 steel on their fracture toughness are described. Such a treatment contributes to an increase ... -
Electric pulse current effect on stress-strain state in the notch vicinity in a cantilever beam under cyclic bending
Stepanov, G.V.; Babutskyi, Anatolii (2010)Calculation results of the thermal effect assessment induced by electric pulse current on stress variation in the edge notch vicinity in a metal cantilever beam under cyclic bending are presented. The results obtained ... -
Evaluation of residual stresses in carbon/carbon composites components joined to copper before and after pulse electromagnetic treatment
Stepanov, G.V.; Babutskyi, Anatolii; Mameev, I.A.; Ferraris, M.; Casalegno, V.; Salvo, M. (2011)Results of experimental and calculated evaluation of residual stresses in carbon/carbon composites components produced by joining of carbon fiber reinforced carbon composites to copper are presented. Pulse electromagnetic ... -
Evaluation of the residual stresses in the welded joint of the header with a connecting pipe of a steam generator after additional thermomechanical treatment
Stepanov, G.V.; Kharchenko, V.V.; Babutskyi, Anatolii; Trunov, N.B.; Piminov, V.A. (2010)We present the results of numerical evaluation of the possibility of application of additional thermomechanical treatment to the welded joints of the headers with connecting pipes of PGV-1000 steam generators from WWER-1000 ... -
Experimental evaluation of pulse electric current effect on residual stresses in composite-to-copper joints
Stepanov, G.V.; Babutskyi, Anatolii; Mameev, I.A.; Ferraris, M.; Casalegno, V.; Salvo, M. (2008)Experimental method for evaluation of residual stress distribution in carbon fiber reinforced carbon composite jointed to copper is presented. Pulse electric current passed through composite-to-copper joint essentially ... -
Experimental evaluation of the electric pulse effect on residual stresses in a Ti-Al-Si-Ag coating
Stepanov, G.V.; Babutskyi, Anatolii; Mameev, I.A. (2008)Experimental results and stress-strain state simulation by the finite element method show that a thin oxidation-resistant coating sputtered onto a titanium alloy substrate develops high-level residual stresses. The electric ... -
Improvement of cyclic fatigue life of metallic materials and welded joints by treatment by pulsed electric current
Stepanov, G.V.; Babutskyi, Anatolii; Mameev, I.A.; Chyzhyk, A.V.; Savitskii, V.V.; Tkachuk, G.I.; Paschin, N.A. (2010)The paper presents experimental data on improvement of cyclic fatigue life of stainless steel and aluminium alloy samples as a result of treatment based on direct passage of electric current through the material, as well ... -
Influence of pulsed electric current treatment on strength of reinforcing steel and its welds under impact loading
Kruszka, L.; Stepanov, G.V.; Zubov , V.I.; Babutskyi, Anatolii (EDP Sciences, 2009)Results of static and impact tension tests of as-received reinforcing steel specimens, specimens with weld joints in their test portion, as well as specimens after high-density pulse current pretreatment are presented. As ... -
Pulse current treatment effect on the strength of reinforcing steel and its weld joint under impact loading
Kruszka, L.; Stepanov, G.V.; Zubov, V.I.; Babutskyi, Anatolii (2009)We present results of static and impact tension tests of as-received reinforcing steel specimens, specimens with weld joints in their test portion, as well as specimens pretreated by high-density pulse current. As test ... -
Pulse electric current effect on mechanical properties of titanium aluminide produced by the self-propagating high-temperature synthesis technique
Stepanov, G.V.; Babutskyi, Anatolii; Chyzhyk, A.V.; Gromov, V.E. (2012)We present results of study on the effect of pulse electric current treatment on bending strength and hardness of intermetallic titanium aluminide produced by the self-propagating high-temperature synthesis technique. It ... -
Redistribution of residual welding stresses in pulsed electromagnetic treatment
Stepanov, G.V.; Babutskyi, Anatolii; Mameev, I.A.; Paschin, N.A.; Savitskii, V.V.; Tkachuk, G.I. (2011)Experimental results demonstrate that in an AMg6 alloy specimen after pulsed electromagnetic treatment, a significant decrease and redistribution of residual welding stresses are observed. Numerical simulation corroborates ... -
Redistribution of stresses in the header-PGV-1000 steam generator connector weldment under loading after thermal treatment
Kharchenko, V.V.; Stepanov, G.V.; Kravchenko, V.I.; Kobel'skii, S.V.; Babutskyi, Anatolii; Trunov , N.B.; Piminov, V.A. (2009)Additional heating of a thickened portion of the steam generator connector during postrepair thermal treatment of the header-connector weldment leads to a decrease in residual tensile stress levels. It is shown that during ... -
Влияние обработки импульсным электрическим током на усталость нержавеющей стали Х18Н10Т
Stepanov, G.V.; Babutskyi, Anatolii; Chyzhyk, A.V.; Gryaznov, B.A.; Nalimov, Yu.S. (2008)