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Advances in Materials Research Volume 14, Number 6, December 2025 , pages 557-573 DOI: https://doi.org/10.12989/amr.2025.14.6.557 |
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Mechanical and nonlinear hyperelastic behavior of EPDM/Glass Fiber/Graphene Nanoplatelets hybrid composites: Experimental characterization and analytical modeling |
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Marwah Sabah Fakhri, Sarah Abdul Kadhim, Emad Kadum Njim and Royal Madan
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| Abstract | ||
| The study investigates a hybrid composite of Ethylene Propylene Diene Monomer (EPDM) rubber, short glass fibres, and graphene nanoplatelets (GNPs) to improve tensile strength, wear resistance, and nonlinear elastic behaviour. Specimens were prepared by compression molding and tested for tensile and wear performance. Stress–strain behaviour was analyzed using Neo-Hookean, Mooney–Rivlin, and Ogden models, with parameters determined through MATLAB optimization. The work combines EPDM rubber, short glass fibres, and GNPs for enhanced mechanical properties and applies comparative modelling using established constitutive models. The statistical analysis is conducted using one-way ANOVA to validate both experimental and analytical solutions. The hybrid composite showed a 110% increase in tensile strength and a 45% reduction in wear loss compared to pure EPDM. The Mooney–Rivlin model gave the lowest fitting error among the models considered. The MATLAB script developed can be used to predict stress–strain behaviour and assist in the design of similar composites for industrial use. | ||
| Key Words | ||
| hyperelastic models; mechanical tests; nanofiller; rubber composites; stress-strain behavior | ||
| Address | ||
| Marwah Sabah Fakhri: Ministry of Higher Education and Scientific Research-Baghdad, Iraq Sarah Abdul Kadhim: Material Engineering Department, College of Technical Engineering, University of Kufa, Iraq Emad Kadum Njim: Ministry of Industry and Minerals, State Company for Rubber and Tires Industries, Iraq Royal Madan: Department of Mechanical Engineering, Graphic Era (Deemed to be University), Dehradun 248002, Uttarakhand | ||
