Występowanie krzywych R w kompozytach narzędziowych na osnowie tlenku glinu

Abstract

Investigations of R-curve behaviour during controlled crack growth of alumina ceramics and $Al_2O_3$-10% mass $ZrO_2N$ (nonstabilised) tool composite were presented. The set of points received during measurement of fracture resistance ($K_R$) versus crack extension (c) have been described by means of linear equation. The value of line directional coefficient affects R-curve behaviour.