Journal of Polymer & Composites Review Article Special issue Open Access
Integrative Machine Learning Approaches for Predicting the Rheological Behaviour of Soft Magnetorheological Elastomers
Abstract
Magnetorheological Elastomers (MREs) are advanced composite materials known for their ability to alter mechanical properties under external magnetic fields, making them highly valuable in adaptive damping systems, vibration control, and smart devices. The accurate prediction of rheological behavior in soft MREs remains a significant challenge due to the complex interplay between material composition and magnetic fields. To address this challenge, this study employs a multi-pronged approach that integrates traditional material science techniques with advanced data analytics. Scanning Electron Microscopy (SEM) and Energy-dispersive X-ray Spectroscopy (EDS) were used to confirm the uniform distribution of iron particles within the MRE samples, ensuring material integrity. Magnetorheological testing data were subsequently collected and utilized for training and validating machine learning algorithms, specifically Random Forest and Gradient Boosting models. These algorithms were rigorously evaluated using established metrics such as R-squared (R²), Mean Absolute Error (MAE), and Root Mean Square Error (RMSE) to determine their predictive performance. The results demonstrated high accuracy, with R² values exceeding 90% for both training and validation datasets. Furthermore, exploratory analysis, including partial dependence plots and feature importance rankings, provided deeper insights into how factors such as Carbonyl Iron Percentage, curing magnetic field, and strain rate influence the complex shear modulus. This research bridges the gap between empirical material science and computational prediction methods, offering a robust framework for predicting the viscoelastic behavior of MREs. The findings contribute to the optimization of MREs for real-world applications, enhancing their potential in smart material systems.
Keywords
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