Study on Acoustic Emission Characteristics of Fiber Reinforced Ceramic Matrix Composites

Through acoustic emission on-line monitoring system, the effective value of acoustic emission is measured, which produces in the grinding of fiber reinforced ceramic matrix composites. The mapping relationship, grinding parameters and the effective value of acoustic emission, is discussed qualitatively. And the influence of different grinding directions on the effective value and spectrum also is studied. These could be significant guidance for controlling the grinding process to improve the machining quality.