20.500.12556/RUL-129253 Acoustic emission detection of macro-cracks on engraving tool steel inserts during the injection molding cycle using PZT sensors This paper presents an improved monitoring system for the failure detection ofen graving tool steel inserts during the injection molding cycle. This system uses acoustic emission PZT sensors mounted through acoustic waveguides on the engraving insert. We were thus able to clearly distinguish the defect through measured AE signals. Two engraving tool steel inserts were tested during the production of standard test specimens, each under the same processing conditions. By closely comparing the captured AE signals on both engraving inserts during the filling and packing stages, we were able to detect the presence of macro-cracks on one engraving insert. Gabor wavelet analysis was used for closer examination of the captured AE signals' peak amplitudes during the filling and packing stages. The obtained results revealed that such a system could be used successfully as an improved tool for monitoring the integrity of an injection molding process. injection molding process monitoring acoustic emission PZT sensors piezoelectric effect injekcijsko brizganje nadzorovanje procesa akustična emisija PZT senzorji piezoelektrični efekt true false true Angleški jezik Slovenski jezik Članek v reviji 2021-08-31 13:33:45 2021-08-31 13:33:48 2022-09-08 04:07:31 0000-00-00 00:00:00 2013 0 0 Str. 6365-6379 iss. 5 Vol. 13 2013 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 681.586.773 1424-8220 10.3390/s130506365 16888854 RAZ_Svecko_Rajko_2013.pdf RAZ_Svecko_Rajko_2013.pdf 1 3D8EB1A9521059BB5A7F48E907DD38A6 738f2c7049e55b6ed8ff7e343e0fe3973d25c09680b20f1c495c3adb38b2ef5d 6cfdc9f2-0a4f-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146222 https://www.mdpi.com/1424-8220/13/5/6365 0 51b6943e-0a4f-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146221 Fakulteta za strojništvo 0 0 0