G. G. Savenkov, B. K. Barakhtin, A. M. Bragov, E. V. Shchukina, “Effect of the notch opening angle on the mechanical properties and fracture morphology of mild steel samples at different strain rates”, Prikl. Mekh. Tekh. Fiz., 2013, Volume 54, Issue 4,Pages <nobr>182

Effect of the notch opening angle on the mechanical properties and fracture morphology of mild steel samples at different strain rates

G. G. Savenkov^a, B. K. Barakhtin^b, A. M. Bragov^c, E. V. Shchukina^a

^a Morskoe Podvodnoe Oruzhie-Gidropribor, St. Petersburg, 194044, Russia
^b St. Petersburg State Marine Technical University, St. Petersburg, 190008, Russia
^c Lobachevskii Research Institute of Mechanics, Nizhnii Novgorod State University, Nizhnii Novgorod, 603950, Russia

Abstract: The mechanical properties of notched samples of St.10 steel under tension at different strain rates were studied. Fracture surfaces of the notched samples after the dynamic bending were investigated, the mechanisms of plastic deformation and fracture were determined, and the fractal dimension of the fracture contours were obtained.

Keywords: mild steel, mechanical properties, dynamic bending, fractal dimension.

UDC: 539.4:669.1

Received: 29.12.2012