An investigation into low-velocity impact behavior of functionally graded treated and untreated cenosphere-based syntactic foams

Mahesh, V and Mahesh, V and Hadi, P and Harursampath, D (2024) An investigation into low-velocity impact behavior of functionally graded treated and untreated cenosphere-based syntactic foams. In: Journal of the Brazilian Society of Mechanical Sciences and Engineering, 46 (3).

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Abstract

This research presents a comprehensive comparative study on the energy absorption behavior of syntactic foams produced from cenosphere, both treated and untreated, under low-velocity impact loading conditions. The treated cenosphere underwent a surface modification process. Syntactic foam specimens, both treated and untreated in combination with a polymeric matrix were fabricated using open mold casting method and the resulting foams were subjected to drop weight impact testing at three different impact energies of 3.13 m/s, 4.42 m/s, and 5.42 m/s to study their energy absorption behavior. The results of this comparative analysis reveal significant differences in the energy absorption behavior between syntactic foams fabricated with treated and untreated cenosphere. The capacity of the syntactic foams to absorb energy increases with an increase in impact energy, regardless of the cenosphere�s volume , showing that they are superior energy absorbers. This finding suggests that waste cenospheres can be a viable and sustainable option for enhancing impact resistance in syntactic foams. Syntactic foams with 60 vol cenosphere emerged as better energy absorbers compared to their counterparts. Also, the specific energy absorption of the foams with 60 vol is found to be better. Foams manufactured using treated cenosphere with 60 vol absorbs 37.52 more energy compared to foams manufactured using untreated cenosphere at impact energy of 118.82 J. Silane treatment of cenospheres increases the peak force required to create damage in syntactic foam during an impact. Surface treatment enhances the adhesion between cenospheres and the matrix, reducing the likelihood of debonding. The novelty of the present study lies in harnessing the industrial waste cenosphere into a useful impact-resistant composite and also enhancing the impact resistance of the developed composite by the approach of surface modification of cenosphere. © The Author(s), under exclusive licence to The Brazilian Society of Mechanical Sciences and Engineering 2024.

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 Springer Science and Business Media Deutschland GmbH.
Keywords:	Construction industry; Coremaking; Foams; Impact testing; Surface treatment; Syntactics, Absorption behaviors; Cenospheres; Comparatives studies; Core material; Energy absorbers; Functionally graded; Impact energy; Low velocity impact; Low velocity impact behaviors; Syntactic foams, Energy absorption
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	23 Apr 2024 05:58
Last Modified:	23 Apr 2024 05:58
URI:	https://eprints.iisc.ac.in/id/eprint/84651

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