Speaker
Description
Polymer melt flow in injection moulding is a black box phenomenon. During the process, the access to the flow field inside the steel tool is limited while high temperatures and pressures occur. A small number of sensors can be placed and flow simulations help understanding the process with numerous sensitive material and process parameters.To gain additional information, the injection moulding tool of the graded rib structures has been equipped with an accelerometer gaining structure borne sound data during the process. Data analysis and feature extraction will help to get additional information about the filling. The results are compared to sensor data and corresponding flow simulation results.The setup is implemented in the tool of the graded rib structures for local fibre migration. This process is sensitive to different material and process parameters. Prospects and limits of the vibroacoustic measurements will be shown in comparison with process and simulation data.