TY - GEN
T1 - In-line Ultrasonic Melt Flow Measurement of Polypropylene with Different Fillers
AU - Putz, Veronika
AU - Burzic, Ivana
AU - Zagar, Bernhard
AU - Miethlinger, Jürgen
PY - 2014
Y1 - 2014
N2 - Pulsed Wave Velocimetry (PWV) is an ultrasonic technique for measuring velocity profiles in flowing liquids. We already demonstrated that PWV can be used to obtain velocity profiles of polypropylene melt, flowing in capillary dies with channel depths less than 2 mm. The required ultrasound transducer with large bandwidth (which is restricted to operating temperatures below 50 °C) is coupled to the hot melt using a temperature buffer, which serves as acoustic waveguide, but decouples transducer and melt thermally. In this contribution, we show results obtained in-line during the extrusion of glass-fiber-filled polypropylene as well as talcum-filled polypropylene at various feed rates.
AB - Pulsed Wave Velocimetry (PWV) is an ultrasonic technique for measuring velocity profiles in flowing liquids. We already demonstrated that PWV can be used to obtain velocity profiles of polypropylene melt, flowing in capillary dies with channel depths less than 2 mm. The required ultrasound transducer with large bandwidth (which is restricted to operating temperatures below 50 °C) is coupled to the hot melt using a temperature buffer, which serves as acoustic waveguide, but decouples transducer and melt thermally. In this contribution, we show results obtained in-line during the extrusion of glass-fiber-filled polypropylene as well as talcum-filled polypropylene at various feed rates.
UR - http://www.sciencedirect.com/science/article/pii/S1877705814027222
U2 - 10.1016/j.proeng.2014.11.607
DO - 10.1016/j.proeng.2014.11.607
M3 - Conference proceedings
VL - 87
T3 - Procedia Engineering
SP - 156
EP - 159
BT - EUROSENSORS 2014, the 28th European Conference on Solid-State Transducers
PB - Elsevier
ER -