DETERMINATION OF THE DEPENDENCE RELATION FOR THE FORCES AT DRILLING IN COMPOSITE MATERIALS WITH POLIMERIC MATRIX AND 24% CONCENTRATION OF GLASS FIBERS

摘要

Composite materials raise specific problems when machining them, because they are anisotropic and not homogenous, and their reinforcing fibers are very abrasive. Significant damages to the work pieces may be introduced and high wear rates of the tools are experienced while machining. This article presents the obtained experimental results and their evaluation when drilling a composite material with polymeric matrix and 24% concentration of glass fibers. The dependence mathematical relation for drilling force is determined, as function of cutting process parameters.