Monitoring the drilling process of carbon fibre laminates using acoustic emission

This work aims to apply Acoustic Emission monitor the drilling process in carbon fibre laminates. Continuous data is captured over entire of a through hole. The use continuous acoustic emission acquisition allows identification lower frequency periodic temporal features related cutting process. A new approach analysis presented that utilises an enveloping technique study these phenomena and show they correlate changes regime as tool wear advances hole quality reduces. supported by measurement temperature, thrust force assessment quality. Results activity correlated process, correlation between observed. has been confirmed corresponding increases drill with consequent decrease observed