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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/22284

Title: Complex injection moulded components - Bridging the knowledge gap
Authors: Meyer, Tino
Haworth, Barry
Harland, Andy R.
Sherratt, Paul J.
Lucas, Tim
Holmes, Chris E.
Keywords: Injection moulding
Concept mould/mold
Microstructure flow hesitation
Weld lines
Issue Date: 2016
Publisher: © American Institute of Physics
Citation: Meyer, T. ...et al., 2016. Complex injection moulded components - Bridging the knowledge gap. Presented at the 32nd International Conference of the Polymer Processing Society, Lyon, France, July 25-29th.
Abstract: Injection moulding is the predominant manufacturing process enabling the production of precise and consistent polymeric parts at a high volume. The final performance of those parts is critically dependent on their melt flow history and the current approach of testing simplified specimens produced by idealized melt flow conditions to specify new or enhanced materials is therefore not sufficient, since final parts often feature a more complex geometry. The purpose of this research is to highlight this omission by conducting high velocity impact and quasi-static tensile tests on PA-12 specimens obtained from a new concept injection moulding tool. This mould allows controlled modification of the material flow by adding specific mould tool design features which lead to the creation of a weld line, flow hesitation, or combination of both of these irregular flow phenomena and is therefore an improved representation of final injection moulded components. Furthermore, test specimens representing simplified as well as more complex geometries can be obtained from the same moulded samples, guaranteeing identical applied process conditions. The occurring microstructural differences due to the diverse melt flow history are verified using optical microscopy and Differential Scanning Calorimetry.
Description: This is a conference paper.
Version: Accepted for publication
URI: https://dspace.lboro.ac.uk/2134/22284
Publisher Link: http://scitation.aip.org/content/aip/proceeding/aipcp
Appears in Collections:Conference Papers and Presentations (Materials)
Conference Papers and Contributions (Mechanical, Electrical and Manufacturing Engineering)

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