VERIFICATION OF THERMOGRAPHIC MONITORING RESULTS OF EXTERNAL TURNING THERMAL PROCESSES BASED ON MATHEMATICAL MODELLING OF THE THERMAL STATE IN THE CUTTING ZONE

Abstract

The article presents an approach to evaluating the reliability of thermographic monitoring of cutting processes during external turning operations performed without the use of a lubricating and cooling technological medium. For this purpose, a modelling approach was defined for the thermal state of the cutting zone based on the heat conduction equation, incorporating initial and boundary conditions. The proposed simplified mathematical model was employed to verify the experimental temperatures obtained through thermographic monitoring. The comparative analysis of experimental results obtained by infrared thermographic measurements with the theoretical temperatures calculated from the model, based on error estimation, confirmed the applicability of the thermographic method in the machining of materials.