STRESS-STRAIN HYSTERESIS MEASUREMENTS OF CYCLICALLY LOADED UNIDIRECTIONAL SIC-SHORT-FIBER REINFORCED ALKALI-LIME-SILICATE-GLASS

For the technical application of fiber reinforced glasses, the knowled ge of their fatigue behavior is important. Therefore, AR-glass specime ns and SiC-short-fiber reinforced glass-compound specimens were produc ed by extrusion and investigated in stress controlled cyclic 3-point b ending tests. The cyclic deformation behavior was characterized and th e failure mechanisms were evaluated as a function of stress amplitude, number of cycles and fiber volume fraction by hysteresis measurements and microscopical investigations of the specimens surfaces. Selected results are presented and discussed.