E.M. Iungaitis – Post-graduate Student,

South Ural State University (National Research University)

E-mail: jungaitis92@gmail.com

N.I. Voytovich – Dr.Sc. (Eng.), Professor, Head of Department, 

South Ural State University (National Research University)

E-mail: voytovichni@mail.ru

A.V. Ershov – Ph.D. (Eng.), Associate Professor,

South Ural State University (National Research University)

E-mail: eav@list.ru

B.V. Zhdanov – Ph.D. (Eng.), Associate Professor,

South Ural State University (National Research University)

E-mail: boris.z@inbox.ru

A.V. Zotov – Ph.D. (Eng.), Associate Professor,

South Ural State University (National Research University)

E-mail: tnt1000@mail.ru