A concept for non-invasive temperature measurement during injection moulding processes
- Institute of Plastics Processing (IKV), RWTH Aachen University Pontstr. 49, 52062 Aachen (Germany)
Current models of the injection moulding process insufficiently consider the thermal interactions between melt, solidified material and the mould. A detailed description requires a deep understanding of the underlying processes and a precise observation of the temperature. Because todays measurement concepts do not allow a non-invasive analysis it is necessary to find new measurement techniques for temperature measurements during the manufacturing process. In this work we present the idea of a set up for a tomographic ultrasound measurement of the temperature field inside a plastics melt. The goal is to identify a concept that can be installed on a specialized mould for the injection moulding process. The challenges are discussed and the design of a prototype is shown. Special attention is given to the spatial arrangement of the sensors. Besides the design of a measurement set up a reconstruction strategy for the ultrasound signals is required. We present an approach in which an image processing algorithm can be used to calculate a temperature distribution from the ultrasound scans. We discuss a reconstruction strategy in which the ultrasound signals are converted into a spartial temperature distribution by using pvT curves that are obtained by dilatometer measurements.
- OSTI ID:
- 22589302
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1713; ISSN 0094-243X; ISSN APCPCS
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALGORITHMS
DESIGN
IMAGE PROCESSING
INJECTION
MANUFACTURING
MOLDING
PHASE DIAGRAMS
PLASTICS
SENSORS
SOLIDIFICATION
TEMPERATURE DISTRIBUTION
TEMPERATURE MEASUREMENT
ULTRASONIC WAVES