Abstract
In polymer processing, measuring velocity profiles of hot polymer melt is of interest. Ultrasound Pulsed-Wave-Velocimetry is able to measure these profiles in optically opaque media with sufficient spatial resolution. This contribution describes a new ultrasonic measurement tool, which is fully integrated in a heated capillary die. It acoustically couples an ultrasound transducer to the liquid under test and mechanically separates it from its harsh environment (high temperature, high pressure). Measurement results, obtained in-line throughout extruding polypropylene, are presented.
Translated title of the contribution | Ultrasound measurement of velocity profiles in opaque polymer melt during extrusion |
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Original language | German (Austria) |
Pages (from-to) | 371 - 380 |
Number of pages | 10 |
Journal | tm - Technisches Messen |
Volume | 81 |
Issue number | 7-8 |
DOIs | |
Publication status | Published - Aug 2014 |
Fields of science
- 202012 Electrical measurement technology
- 202036 Sensor systems
- 202027 Mechatronics
- 202037 Signal processing
JKU Focus areas
- Mechatronics and Information Processing