Crack Resistance of Instrumental Composites Taking into Account Thermal Residual Stresses
The problem of the continuity of the medium in the manufacture and operation of composite cutting tools is considered.A method is proposed for calculating crack resistance at the interface between two dissimilar materials based on the determination of thermal residual stresses. Calculations of the probability of crack initiation for various combinations of instrumental materials have been carried out, allowing the selection of the most promising compositions. The proposed method for assessing the fracture toughness of wedge composites makes it possible to select the most promising compositions for creating economically reinforced cutting parts of tools.