Article (Scientific journals)
Melt Instability Identification Using Unsupervised Machine Learning Algorithms
Gansen, Alex; Hennicker, Julian; Sill, Clemens et al.
2023In Macromolecular Materials and Engineering, p. 2200628
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Abstract :
[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.
Disciplines :
Materials science & engineering
Author, co-author :
Gansen, Alex
Hennicker, Julian
Sill, Clemens
Dheur, Jean
Hale, Jack  ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
Baller, Jörg ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
External co-authors :
Language :
Title :
Melt Instability Identification Using Unsupervised Machine Learning Algorithms
Publication date :
Journal title :
Macromolecular Materials and Engineering
Publisher :
John Wiley & Sons, Weinheim, United Kingdom
Pages :
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Computational Sciences
Physics and Materials Science
FnR Project :
FNR14263566 - Enhancement Of Extruder Modelling With A Data-driven Approach, 2019 (01/02/2020-31/01/2022) - Jörg Baller
Funders :
FNR - Fonds National de la Recherche [LU]
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