A.E. Gorodetsky - Dr. Sc. (Eng.), Professor, Institute of Problems of Mechanical Engineering RAS (SPb) E-mail:g27764@yandex.ru V.G. Kurbanov - Ph. D. (Phys.-Math.), Senior Research Scientist, Institute of Problems of Mechanical Engineering RAS (SPb) E-mail:vugar_borchali@yahoo.com I.L. Tarasova - Ph. D. (Eng.), Senior Research Scientist, Institute of Problems of Mechanical Engineering RAS (SPb) V.A. Agapov - Junior Research Scientist, Institute of Problems of Mechanical Engineering RAS (SPb)