M.V. Akinin - Ph. D. (Eng.), Junior Research Scientist, RSREU (Ryazan). E-mail: akinin.m.v@gmail.com N.V. Akinina - Post-graduate Student, RSREU (Ryazan). E-mail: natalya.akinina@gmail.com M.B. Nikiforov - Ph. D. (Eng.), Associate Professor, RSREU (Ryazan). E-mail: nikiforov.m.b@evm.rsreu.ru A.V. Sokolova - Undergraduate, RSREU (Ryazan). E-mail: alexandra.sokolova00@mail.ru A.I. Taganov - Dr. Sc. (Eng.), Professor, Head of Department, RSREU (Ryazan). E-mail: alxtag@yandex.ru