V. A. Rudnitsky
The Institute of Applied Physics of the National Academy of Science of Belarus
Russian Federation

D. Sc. (Engineering), Professor

A. P. Kren
The Institute of Applied Physics of the National Academy of Science of Belarus
Russian Federation

D. Sc. (Engineering), Head of the mechanical testing laboratory.

G. A. Lantsman
The Institute of Applied Physics of the National Academy of Science of Belarus
Russian Federation

undergraduate