Data fusion of distributed AE sensors for the detection of friction sources during press forming

Optimization of Positioning of an Acoustic Emission Sensor for Monitoring Hot Forging

“…The AE technique has been used for monitoring a variety of forming processes [4][5][6][7][8][9][10][11]. Force/displacement measurements are usually employed to monitor metalforming processes [4].…”

“…The AE information generated due to dislocation avalanche and interface rubbing and friction has been observed to be higher, while the AE data generated in the intermediate deformation region beyond dislocation avalanche have been found to be lower [6][7][8][9]. The AE technique has been used to measure friction during metal-forming processes [10,11]. For locating sources of friction during deep drawing of sheet metal, AE signals recorded by three sensors and processed by fast Fourier-transform and discrete wavelet transform methods have been used [10].…”

“…The AE technique has been used to measure friction during metal-forming processes [10,11]. For locating sources of friction during deep drawing of sheet metal, AE signals recorded by three sensors and processed by fast Fourier-transform and discrete wavelet transform methods have been used [10]. The AE monitoring of forging process has been reported [9].…”

Acoustic emission sensor with structure-enhanced sensing mechanism based on micro-embossed piezoelectric polymer

“…AE differs from the above techniques in that it is able to detect when a flaw or a crack occurs and where the crack has occurred, that is, AE perceives and even locates active flaws. Accordingly, AE sensors are of special interest for real-time detection of developing hazards in critical structures [7]. Research on fabrication of AE sensors includes piezoelectric ceramics, copolymers, shape memory alloys and optical fiber sensors [8][9][10][11][12].…”

A panoramic sampling of avant-garde applications of information fusion

“…An off the beaten track application from the world of manufacturing is reported by Yang et al [24]. The study proposes a friction source location system using three acoustic emission (AE) sensors positioned on the metal forming tool.…”