TY JOUR TI EVOLUTION OF THE DESIGN OF A MULTI-CONTACT VIBRATION IMPACT TOOL AND THE MAIN WAYS OF ITS DEVELOPMENT KW SURFACE PLASTIC DEFORMATION KW MULTI-CONTACT VIBRATION IMPACT TOOL KW MODERNIZATION KW ALGORITHM KW MICRORELIEF. JO Voronezh Scientific-Technical Bulletin AU Prokopets, G.A. AU Prokopets, A.A. PY 2022 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov