M.V. Ovsyannikov - Ph.D. (Eng.), Associate Professor, Perm National Research Polytechnic University. E-mail: mvo50@mail.ru K.I. Stolyarov - Master, Bauman Moscow State Technical University. E-mail: bmstukirill@gmail.com S.A. Bukhanov - Assistant, Bauman Moscow State Technical University. E-mail: bukhanov@yandex.ru A.B. Petrochenkov - Ph.D. (Eng.), Associate Professor, Perm National Research Polytechnic University. E-mail: pab@msa.pstu.ru S.V. Bochkarev - Dr.Sc. (Eng.), Professor, Perm National Research Polytechnic University. E-mail: bochkarev @msa.pstu.ru