Wit Grzesik is a full professor in the field of Mechanical Engineering. He received his MS degree (1973), PhD (1981) and DSc degree (1988) all in mechanical engineering. After production practice (1973-1975) he was developed his academic career as a Research Scientist (1975-1981), Assistant Professor (1982-1988), Associate Professor (1988-1999) and Full Professor of Mechanical Engineering and the Head of the Department of Manufacturing Engineering (1992-2015) at the Opole University of Technology. Prof. W. Grzesik has published about 300 papers in journals and conference proceedings, four reference books and nine chapters in books which induced in about 2600 citations and Scopus- h-Index: 29. The main research interests include advanced machining processes, surface integrity, surface metrology, and hybrid manufacturing processes.

Adam Ruszaj is a full professor in the field of Mechanical Engineering. He received his degrees: MS (1971),PhD (1977), DSc degree (1990) and Full Professor of Mechanical Engineering (2000). He was employed as Research Scientist (1971-1977), Assistant Professor (1978-1990), Associate Professor (1990-1999) and Full Professor of Mechanical Engineering (2000 – up to now) at the: industrial Institute of Advanced Manufacturing Technology (1971 – 2008), Cracow University of Technology (2006 – 2018 – since 2018-senior professor) and State University of Applied Sciences in Nowy Sącz (2000 – up to now; 2002 – 2006 and since 2016 – Head of Engineering Institute). The main results of his research are implemented in industry as machine tools (15-th) and unconventional technologies, published in over 290 papers, 2 – chapters and 1 - book (Scopus- h-Index: 9; 254 citations). He specializes in unconventional manufacturing systems and processes (ECM, EDM, LBM, hybrid manufacturing processes, micro and nanomanufacturing) and bionic engineering.

Wit Grzesik is a full professor in the field of Mechanical Engineering. He received his MS degree (1973), PhD (1981) and DSc degree (1988) all in mechanical engineering. After production practice (1973-1975) he was developed his academic career as a Research Scientist (1975-1981), Assistant Professor (1982-1988), Associate Professor (1988-1999) and Full Professor of Mechanical Engineering and the Head of the Department of Manufacturing Engineering (1992-2015) at the Opole University of Technology. Prof. W. Grzesik has published about 300 papers in journals and conference proceedings, four reference books and nine chapters in books which induced in about 2600 citations and Scopus- h-Index: 29. The main research interests include advanced machining processes, surface integrity, surface metrology, and hybrid manufacturing processes.

Adam Ruszaj is a full professor in the field of Mechanical Engineering. He received his degrees: MS (1971),PhD (1977), DSc degree (1990) and Full Professor of Mechanical Engineering (2000). He was employed as Research Scientist (1971-1977), Assistant Professor (1978-1990), Associate Professor (1990-1999) and Full Professor of Mechanical Engineering (2000 – up to now) at the: industrial Institute of Advanced Manufacturing Technology (1971 – 2008), Cracow University of Technology (2006 – 2018 – since 2018-senior professor) and State University of Applied Sciences in Nowy Sącz (2000 – up to now; 2002 – 2006 and since 2016 – Head of Engineering Institute). The main results of his research are implemented in industry as machine tools (15-th) and unconventional technologies, published in over 290 papers, 2 – chapters and 1 - book (Scopus- h-Index: 9; 254 citations). He specializes in unconventional manufacturing systems and processes (ECM, EDM, LBM, hybrid manufacturing processes, micro and nanomanufacturing) and bionic engineering.