Using Acoustic Emission for Monitoring of Grinding Process of Fine Ceramics : Sensitivity of AE to Grain Depth of Cut

Abstract

Acoustic emission (AE) was used for in-process detection of ceramic workpiece cracking and chipping during grinding of ceramics. For this purpose AE signals generated during creep feed grinding of alumina were detected using a piezoelectric sensor attached to the workpiece and analyzed by computer. The results prove the sensitivity of different AE parameters to grinding conditions and grinding mode. Particularly, AE parameters show a good correlation with the abrasive grain depth of cut.