Estimation of Die Wear During Press Forming by Integrating Information from Die-Embedded 3-Axis Force and AE Sensors

This study proposes a framework for estimating wear phenomena that affect die life in press forming. Dynamic signals during forming were measured using a three-axis piezoelectric force sensor and an acoustic emission (AE) sensor, and wear-related features were extracted from the load and AE data. These features enabled discrimination of adhesive wear, ploughing wear, and delamination. The proposed approach is expected to contribute to improved die life prediction and productivity in press forming.