Research on CFRP inner wall roughness during vibration drilling of CFRP/Ti based on acoustic emission

Aiming at the quality problem of CFRP inner wall in CFRP/Ti laminated material assisted vibration drilling technology, acoustic emission (AE) signals different processing parameters during are collected. Analyze relationship between characteristics and roughness under number holes. The test results analysis show that other kept unchanged process, only one parameter is changed. When amplitude spindle speed increase, AERMS value increases while decreases. feed rate increases, increase simultaneously. energy ratio wavelet packet AE also closely related to wall. Therefore, actual machining can be monitored by monitoring improve efficiency.