H.R. Sagatelyan - Dr.Sc. (Eng.), Professor, MSTU n.a. Bauman. E-mail: h_sagatelyan@mail.ru A.V. Shishlov - Head Office Branch, NIIPM - branch of TsENKI. E-mail: a.shishlov@niipm.ru V.D. Shashurin - Dr.Sc. (Eng.), Professor, Head of Chair, MSTU n.a. Bauman. E-mail: k_rl6@bmstu.ru