SEMDOK 2019 : 24th international seminar of Ph.D. students under the auspices of prof. Dr. Ing. Milan Sága Dean of the Faculty of Mechanical Engineering of the University of Žilina : Western Tatras - Zuberec, Slovakia : January 30-February 01, 2019. (University of Žilina, Faculty of Mechanical Engineering, Department of Materials Engineering, 2019)