In this master thesis, an overview of experimental research as a basis for optimizing the parameters of technological processes is given. World-class research and research at the Faculty of Mechanical Engineering in Slavonski Brod and the Faculty of Mechanical Engineering and Naval Architecture in Zagreb were analysed. First, the search databases used are presented and different search methods are shown. The ScienceDirect and Publons databases were searched for world-class research areas, while the CROSBI database was searched for research areas at the Faculty of Mechanical Engineering in Slavonski Brod and the Faculty of Mechanical Engineering and Naval Architecture in Zagreb. Papers in which experimental research was applied were selected and then analysed. For each paper, the problem or subject of research was described. Then, the papers were analysed from the point of view of design and analysis of experiments, i.e. the input variables, output variables, applied research machines and devices and the results obtained by the research were listed. By searching databases and analysing selected papers, it was concluded that experimental research is the basis for optimization and for making objective conclusions in all scientific fields. Experimental research also requires a lot of time and money, so it is necessary to be rational, which is helped by a systematic approach to experimental design.