%0 Journal Article %T ANALYSIS OF HARDNESS TEST METHODS AND PROSPECTS OF IMPROVEMENT %A Sergiev , A.. %A Makarov, A.V. %A Vladimirov , A.. %A Belov, N.V. %K loading mechanism, elastic aftereffect, plastic, additive tendency, actual fracture resistance %J Bulletin of Belgorod State Technological University named after. V. G. Shukhov %D 2018 %N 3 %P 6 %I Belgorod State Technological University named after V.G. Shukhov