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Ultrasound tomography for inline monitoring of plastic melts

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Academic year: 2020

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Figure

Figure 1. View on the delay lines of the US transducers inside ofthe USPT adapter (top) and USPT adapter (wrapped in yellow poly-imide tape) mounted between gradient tool and shaping nozzle ofthe used extrusion line (bottom).
Figure 2. System electronics of the USPT system (Inoson PCM12343).
Figure 3. Custom-made omnidirectional US transducer made byInoson GmbH.
Figure 4. Bandpass-filtered A-scan of an US signal (53 VPP, 3 burstcycles, gain level 49 %) of two opposing transducers in the USPTadapter filled with distilled water: the transmission pulse and thefirst back wall echo can be clearly distinguished and are marked inred.
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