Real-time and in-line ultrasonic diagnostics of polymer extrusion and injection molding processes together with the high temperature ultrasonic probes used are presented. For polymer extrusion, melt quality, filler concentration, and dispersion monitorings are the examples. Clad ultrasonic rod probes consisting of a core and a cladding fabricated by a thermal spray technique are used. For injection molding, diagnostics of melt flow front, average flow speed, filling completion, and solidification are illustrated. Sprayed high temperature ultrasonic thick film transducers integrated onto the mold inserts are employed.

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Persistent URL dx.doi.org/10.1142/9789812770943_0003
Citation
Jen, C.-K. (Cheng-Kuei), Sun, Z. (Zhigang), Tatibouët, J. (Jacques), & Ono, Y. (2007). Real-time and in-line ultrasonic diagnostics of polymer processes. doi:10.1142/9789812770943_0003