The objective of this work is to evaluate the extension of the delaminated area around the hole obtained by machining and to correlate this damage with the loss of resistance of the material. For this purpose, two batches of specimens obtained from carbon/epoxide plates were tested, in which a hole was drilled at constant cutting speed and three different feed rates, as well as four tool options – helical MD, helical HSS, helical with pre-cutting hole and brad type. The specimens thus obtained were radiographed and from the resulting images it was possible to calculate the extent of the delaminated area. At the end, the specimens were mechanically tested – Pin-Bearing test – to obtain the proper correlation between damage extension and mechanical resistance. The results show that a relationship can be established between the delaminated area and the mechanical strength of the material, and that this decreases with the increase in the area of damage, making it possible to control the cutting variables to reduce the extent of this zone.