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  • Acoustic emission detection of macro-cracks on engraving tool steel inserts during the injection molding cycle using PZT sensors [Elektronski vir]
    Svečko, Rajko ...
    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 signalsć 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.
    Vir: Sensors [Elektronski vir]. - ISSN 1424-8220 (Vol. 13, no. 5, 2013, str. 6365-6379)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2013
    Jezik - angleški
    COBISS.SI-ID - 16888854