METHOD FOR DETERMINING STRESS LEVELS IN A MATERIAL OF A PROCESS ENGINEERING APPARATUS
The present invention relates to a method for determining a number of mechanical stresses (304) prevailing at different first locations in a material of a process engineering apparatus (1), wherein the number of mechanical stresses (304) prevailing at the different first locations in the material of the process engineering apparatus (1) is determined from a number of temperatures (301) prevailing at different second locations in the material of the process engineering apparatus using an empirical model (M3), the empirical model (M3) being trained by means of training data (207'), which are derived using a thermos-hydraulic process Simulation model (M1) and a structural- mechanical model (M2) of the process engineering apparatus (1).