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Modelling creep behavior of PEEK at different temperatures using artificial neural networks [Elektronski vir]Aulova, Alexandra ; Bek, MarkoUsing neural networks (NN) for real-time structural health monitoring of polymer-based structures has advantages compared to existing methods. While existing structural health monitoring systems deal ... mostly with geometrical changes (cracks, delamination) NN can be trained to detect changes in material properties due to environmental conditions and time. With this contribution we demonstrate the capabilities of Multilayer Perceptron (MLP) neural network for response prediction of time- and temperature-dependent high performance polyether ether ketone (PEEK) at different temperatures. We investigated two different shear stress loading conditions at different temperatures: constant shear stress rate [1] and harmonical shear stress excitation. Training data was obtained experimentally by means of rotational rheometer. This contribution covers experimental procedure for training data generation and neural network design steps, including training procedure, choice of data for better generalization and topology optimization. We have shown that proper choice of temperatures corresponding to training data is of crucial importance for behavior prediction quality.Type of material - conference contribution ; adult, seriousPublish date - 2022Language - englishCOBISS.SI-ID - 114095875
Author
Aulova, Alexandra |
Bek, Marko
Topics
lezenje |
nevronske mreže |
PEEK |
creep |
neural networks |
PEEK
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Aulova, Alexandra | 33907 |
Bek, Marko | 33756 |
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