Effect of mechanical processing of samples at cutting on composites testing

To assess the strength properties of polymer composite materials (PCM), elastic-strength tests are carried out, one of the stages of which is the cutting of samples. Among the many cutting methods, the most common is the mechanical processing of the material using a cutting tool. The influence of cut quality on the results of their mechanical tests is considered in the article. Experimental data on the ultimate strength of PCM based on carbon fillers are presented. The surface of the samples in the cutting zone is visualized. A method for finishing the samples is proposed.