INTERFACIAL DEBONDING BEHAVIOR OF MULLITE SIC CONTINUOUS FIBER-COMPOSITE/

Mullite/SiC continuous fiber composites mere fabricated by hot-pressin g under different processing conditions. The interfacial shear strengt h was measured during the pull-out test, and the effect of fabrication conditions on interfacial debonding behavior was discussed, The debon ding length during the pull-out test was quantitatively evaluated usin g acoustic emission. The interfacial shear strength was evaluated by s tress analysis. The control of interfacial shear strength was achieved by controlling the hot-press temperature. An increase of load was fou nd during the pull-out process after complete debonding. In order to e xplain the increased load, a new model is presented.