Reference : Melt Instability Identification Using Unsupervised Machine Learning Algorithms
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Engineering, computing & technology : Materials science & engineering
Computational Sciences; Physics and Materials Science
Melt Instability Identification Using Unsupervised Machine Learning Algorithms
Gansen, Alex []
Hennicker, Julian []
Sill, Clemens []
Dheur, Jean []
Hale, Jack mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
Baller, Jörg mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
Macromolecular Materials and Engineering
John Wiley & Sons
United Kingdom
[en] In industrial extrusion processes, increasing shear rates can lead to higher production rates. However, at high shear rates, extruded polymers and polymer compounds often exhibit melt instabilities ranging from stick-slip to sharkskin to gross melt fracture. These instabilities result in challenges to meet the specifications on the extrudate shape. Starting with an existing published data set on melt instabilities in polymer extrusion, we assess the suitability of clustering, unsupervised machine learning algorithms combined with feature selection, to extract and identify hidden and important features from this data set, and their possible relationship with melt instabilities. The data set consists of both intrinsic features of the polymer as well as extrinsic features controlled and measured during an extrusion experiment. Using a range of commonly available clustering algorithms, it is demonstrated that the features related to only the intrinsic properties of the data set can be reliably divided into two clusters, and that in turn, these two clusters may be associated with either the stick-slip or sharkskin instability. Furthermore, using a feature ranking on both the intrinsic and extrinsic features of the data set, it is shown that the intrinsic properties of molecular weight and polydispersity are the strongest indicators of clustering.
Fonds National de la Recherche - FnR
This is an open access article under the terms of the Creative Commons Attribution license.
FnR ; FNR14263566 > Jörg Baller > EMDD > Enhancement Of Extruder Modelling With A Data-driven Approach > 01/02/2020 > 31/01/2022 > 2019

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