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1. Acoustic emission detection of macro-cracks on engraving tool steel inserts during the injection molding cycle using PZT sensors Rajko Svečko, Dragan Kusić, Tomaž Kek, Andrej Sarjaš, Aleš Hančič, Janez Grum, 2013, original scientific article Keywords: injection molding, process monitoring, acoustic emission, PZT sensors, piezoelectric effect |