Segar, Loga Varathan (2023) Effect of graphene nanoplatelets on the microstructure and mechanical properties of aluminium matrix composite. Masters thesis, Universiti Teknikal Malaysia Melaka.
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Abstract
In this study, an effort for improving the properties of aluminum matrix composites by adding the different concentration of graphene nanoplatelets. The improved composite can be used on specific application such as automobile and aviation field. Graphene is itself a material with exceptional mechanical, thermal as well as microstructural properties such as high strength, high electrical and thermal conductivity, chemical inertness features and linear dispersive electronic structure. Therefore, a graphene reinforced aluminum matrix composite with varying concentration is prepared using stir casting method. In this project, Al 360 Alloy is used as an aluminum matrix composite. The investigation of the mechanical and physical properties of graphene reinforced aluminum composite matrix is done using different experimental setup such as: XRD (X-ray diffraction), DSC (Differential Scanning Calorimetry) and UTM (Universal Tensile Machine). XRD is used to investigate the chemical properties of graphene reinforced aluminum matrix composite such as such as crystal structure, shape and size of graphene nanoplates in the composites. DSC is used to find out the thermal properties of the prepared matrix composite such as melting point, specific heat capacity, glass transition temperature. Similarly, UTM is used to determine the mechanical properties of the prepared composites of varying graphene compositions. UTM is used to apply 20 kN tensile load and measure the deformation and load information. The information obtained is useful for determine the mechanical properties such as Young's modulus, yield strength, and ultimate tensile strength of the material. The discussed experiments are carried on different concentrations of graphene on aluminum matrix composite due to which an optimal concentration of graphene that improves the properties and beneficial for specific application is found out. The tensile testing results of Graphene Nanoplatelet (GNP)-reinforced composite specimens are summarized. Specimens with different GNP concentrations (0.3%, 0.6%, and 0.9%) were evaluated for their elastic modulus, tensile strength, yield strength, modulus of resilience, modulus of toughness, and ductility. The results indicate that the concentration of GNP significantly influences the mechanical properties of the composites. Higher GNP concentrations generally lead to increased tensile strength and yield strength. However, the ductility of the composites decreases with higher GNP concentrations. These findings provide valuable insights for the optimization of GNP-reinforced composites and inform the design of advanced materials with improved mechanical characteristics.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Graphene, Mechanical properties, Nanostructured materials |
| Divisions: | Library > Tesis > FKP |
| Depositing User: | MUHAMAD HAFEEZ ZAINUDIN |
| Date Deposited: | 30 May 2024 12:18 |
| Last Modified: | 30 May 2024 12:18 |
| URI: | http://eprints.utem.edu.my/id/eprint/27358 |
| Statistic Details: | View Download Statistic |
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