Modelling the influence of high-energy ionising radiation on the properties of materials with polymeric matrix using advanced artificial intelligence tools plays an important role in the research and development of new materials for various industrial applications. It also applies to effective modification of existing materials based on polymer matrices to achieve the desired properties. In the presented work, the effects of high-energy electron beam radiation with various doses on the dynamic mechanical properties of melamine resin, phenol-formaldehyde resin, and nitrile rubber blend have been studied over a wide temperature range. A new stiffness-temperature model based on Weibull statistics of the secondary bonds breaking during the relaxation transitions has been developed to quantitatively describe changes in the storage modulus with temperature and applied radiation dose until the onset of the temperature of the additional, thermally-induced polymerisation reactions. A global search real-coded genetic algorithm has been successfully applied to optimise the parameters of the developed model by minimising the sum-squared error. An excellent agreement between the modelled and experimental data has been found.

Department of Electrical Engineering Automation and Informatics Faculty of Engineering Slovak University of Agriculture in Nitra Tr A Hlinku 2 949 76 Nitra Slovakia

Department of Material Technologies and Environment Faculty of Industrial Technologies in Púchov Alexander Dubček University of Trenčín Ivana Krasku 491 30 020 01 Púchov Slovakia

Department of Mechanical Engineering Institute of Technology and Business Faculty of Technology České Budějovice Okružní 10 370 01 České Budějovice Czech Republic

Department of Numerical Methods and Computational Modeling Faculty of Industrial Technologies in Púchov Alexander Dubček University of Trenčín Ivana Krasku 491 30 020 01 Púchov Slovakia

Department of Transport Means and Diagnostics Faculty of Transport Engineering University of Pardubice Studentská 95 532 10 Pardubice Czech Republic

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