The effect of metal wires on the fracture of a brittle-matrix composite

摘要: The behaviour of stainless steel, work-hardened nickel and annealed wires bridging a crack in brittle-matrix has been studied as function the length orientation wire. pull-out stress for steel wire epoxy resin increases less than linearly with length, following predicted by Takaku Arridge [6]. Wires inclined at 20° 40° to tensile axis gave stresses some 30% higher parallel axis, this increase being attributed mainly enhanced friction on bent near its point exit from matrix. Work-hardened fractured when their exceeded critical value, was significantly shorter axis. In contrast, wires, no matter how long, did not fracture but pulled out limiting which slightly results show that, cases, there does exist above an embedded will rather pull