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Development and mechanical characterization of cenosphere-reinforced CFRP and natural rubber core sandwich composite

Aithal, NU and Mahesh, V and Mahesh, V and Ponnusami, SA and Harursampath, D (2023) Development and mechanical characterization of cenosphere-reinforced CFRP and natural rubber core sandwich composite. In: Journal of the Brazilian Society of Mechanical Sciences and Engineering, 45 (9).

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Official URL: https://doi.org/10.1007/s40430-023-04424-2


Driven by the growing concern for environmental sustainability, there is an increasing need to explore innovative approaches for repurposing industrial waste materials. This study focuses on investigating the potential uses and challenges associated with cenosphere, a waste product derived from coal combustion in thermal power plants. Typically regarded as waste, cenosphere offers an opportunity to contribute to sustainability efforts. The objective of this research is to evaluate the influence of cenosphere, a ceramic-rich industrial waste, on the mechanical properties of woven CFRP-Rubber-CFRP (Carbon fibre-reinforced polymers) sandwich composites. The composite specimens were fabricated using the conventional hand lay-up technique, incorporating different weight percentages (5, 10, 15, and 20 wt.) of cenosphere as a particulate filler. Tensile, flexural, and impact testing were conducted according to ASTM standards to assess the impact of the filler content on the mechanical properties. The results demonstrate that the inclusion of approximately 15 by weight of discarded cenosphere significantly enhances the tensile strength, flexural strength, interlaminar shear strength (ILSS), and impact strength of the sandwich composites, yielding improvements of approximately 1.6, 1.56, 2.06, and 1.85 times, respectively, compared to unfilled composites. Microscopic analysis of the composites reveals a well-dispersed cenosphere distribution within the matrix, contributing to the notable enhancement in overall strength characteristics. © 2023, The Author(s).

Item Type: Journal Article
Publication: Journal of the Brazilian Society of Mechanical Sciences and Engineering
Publisher: Springer Science and Business Media Deutschland GmbH
Additional Information: The copyright for this article belongs to the Authors.
Keywords: ASTM standards; Carbon fibers; Fillers; Graphite; Impact strength; Impact testing; Industrial research; Rubber; Sustainable development; Tensile strength; Tensile testing; Thermoelectric power plants, A: Ceramics; Cenospheres; Environmental sustainability; Innovative approaches; Mechanical characterizations; Repurposing; Rubber core; Sandwich composites; Thermal-power plants; Waste products, Reinforcement
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 28 Oct 2023 11:02
Last Modified: 28 Oct 2023 11:02
URI: https://eprints.iisc.ac.in/id/eprint/83129

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