James L Vogel
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Die extrusion is a manufacturing process to create parts with a fixed cross-sectional profile by passing melted plastic through a die of the desired cross-section. The resulting plastic piece then hardens as it is pulled through a water trough and is then cut into pieces with the desired length. Extrusion has significant cost savings over other plastic processing methods. In current technology, the dies have a fixed geometry creating parts with a constant cross-section. The objective of this project is to create a die that can change shape by actuating a lever resulting in a part with variable cross sections. In order to determine the feasibility of variable geometry extrusion, dies have been designed and constructed. The process is tested by the use of a laser scanner that captures data points of the cross sections at multiple locations along the variable extruded part. The data is analyzed by a numerical process to determine the repeatability accuracy by comparing multiple profiles of the same extrusion.
Graduate Research - Graduate
Andrew P. Murray, David H. Myszka
Primary Advisor's Department
Mechanical and Aerospace Engineering
Stander Symposium project
"Assessing Shape Repeatability in Variable Geometry, Polymer Extrusion Dies" (2017). Stander Symposium Projects. 856.