Bedi, SS and Mallesha, V and Mahesh, V and Mahesh, V and Ponnusami, SA (2023) Investigation of low-percentage graphene reinforcement on the mechanical behaviour of additively manufactured polyethylene terephthalate glycol composites. In: Journal of Thermoplastic Composite Materials .
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Abstract
The current work investigates the influence of graphene on the mechanical properties of additive-manufactured polyethylene terephthalate glycol (Prince Edward IslandTG) composites. To this end, the graphene content is varied by 0.02 wt.%, 0.04 wt.%, 0.08 wt.%, and 0.1 wt.% to obtain different compositions of PETG/graphene composites. The filaments were prepared by mixing the PETG pellets and graphene flakes into the required quantity. Further, the mixture is extruded using a single screw extruder into small filaments with a 1.75 mm diameter. Using fused deposition modelling (FDM), the specimens were 3D printed following ASTM requirements. The fabricated PETG/graphene specimens are assessed for their mechanical properties, such as tensile, compression, flexural and impact characteristics. Finally, the fractography of the tested specimens is analysed using a scanning electron microscope (SEM). The experimentation of PETG/graphene composites reveals that the optimum mechanical properties can be achieved when PETG is reinforced with 0.04 wt.% of graphene. As opposed to virgin PETG, an increment of 89.71%, 81.76%, 21.60%, and 81.25% is witnessed in the tensile, compression, flexural, and impact strengths of the PETG/0.04 wt.% graphene composite. The outcome of this work is believed to pave the way for broadening the applications of graphene-based composites in electromechanical and smart structure engineering domains.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Thermoplastic Composite Materials |
| Publisher: | SAGE Publications Ltd |
| Additional Information: | The copyright for this article belongs to the author. |
| Keywords: | Additive manufacturing; fused deposition modelling; graphene; mechanical characterisation; polyethylene terephthalate glycol |
| Department/Centre: | Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) |
| Date Deposited: | 24 Jul 2023 05:35 |
| Last Modified: | 24 Jul 2023 05:35 |
| URI: | https://eprints.iisc.ac.in/id/eprint/82616 |
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