Michal Petru received his Ph.D. degree and is Associate Professor in design and machine parts from the Faculty of Mechanical Engineering, Technical University of Liberec, Liberec, Czech Republic. In present time, Petrů is Head of Department of Machinery Construction at the Institute for Nanomaterials, Advanced Technology and Innovation, Liberec, Czech Republic. He is author or coauthor of many scientific and professional publications for area numerical modeling and optimizing design machine (more than 50 publications in databases SCOPUS and ISI WOS, 20 patents and utility samples). His main interests are related to engineering, textile engineering, agricultural science, environmental science, and R&D in new materials applicable for optimizing design of parts and machines.