Al-Qadisiyah Journal for Engineering Sciences

Influence of combined carbon-epoxy on the fatigue life of elastomer materials

Document Type : Research Paper

Authors

Nabeel Almuramady 1
Ali F. Fahem 1, 2
Husam Kareem Mohsin Al-Jothery 1
Essam L. Esmail 1

1 Department of Mechanical Engineering, College of Engineering, The University of Al-Qadisiyah, Al Diwaniyah, Qadisiyah Province, Iraq.

2 School of Materials Science and Engineering, College of Engineering, Architecture and Technology, Oklahoma State University, Tulsa, OK, 74106, USA

10.30772/qjes.2024.153656.1391
Abstract
The Rubber-carbon black composite material-based product is the main matrix used in domestic and industrial applications in the last decades. This study proposes replacing the reinforcing carbon with matrix-neutral rubber with epoxy resins to reduce the carbon footprint and lower the environmental impact while enhancing the product's mechanical properties. Five additive percentages of carbon--epoxy, starting from 100-50% Carbon-black and 0-50% Epoxy, were studied using a hybrid experimental-numerical approach. Experimentally, the extension fatigue, flexural fatigue, and elongation modulus testing were completed using the universal testing machines with a low loading rate (quasi-static process). Numerical, the finite element analysis by the commercial software ABAQUS-SAE within the built-in hyperelastic constitutive model was utilized to visualize the full-field stresses. The experimental nominal stress-strain data was used as input for the numerical model, and Ogden's formula was applied to simulate the mechanical response of the specimens. The stress field and stress concentration of different experimental tests are given. The effect of increasing the additive epoxy on the rubber-carbon mechanical response and the fatigue life under repeated loads were identified and discussed. Furthermore, the results show that a small amount of epoxy can be used as a reinforcing material for a rubber compound and it improves the mechanical properties. This along with more results are shown in the result section

Keywords

Rubber
RSS1
Epoxy
Carbon black
Numerical analysis
Fatigue
ABAQUS
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Al-Qadisiyah Journal for Engineering Sciences
Volume 18, Issue 1
Winter 2025
Pages 47-53

  • Receive Date 17 March 2024
  • Revise Date 08 August 2024
  • Accept Date 25 December 2024

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