Tribology and Materials | Volume 3 | Issue 4 | 2024 | 150-162
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https://doi.org/10.46793/tribomat.2024.016
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Surface texturing for tribomechanical performance optimisation of epoxy composites reinforced with chemically activated carbon
Leonard Maduabuchi Akuwueke
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Chinwuba Victor Ossia
Harold Ugochukwu Nwosu
Faculty of Engineering, University of Port Harcourt, Port Harcourt, Nigeria
Abstract: The effects of surface texturing on the tribomechanical
properties of epoxy composites reinforced with chemically activated
carbon were studied. Activated carbon produced from palm kernel (PKSAC)
and coconut shells (CSAC) were composed in three concentrations (XCSAC):
100 vol. % CSAC + 0 vol. % PKSAC, 50 vol. % CSAC + 50 vol. % PKSAC and 0
vol. % CSAC + 100 vol. % PKSAC, three particle sizes (XPS): 60, 105 and
150 μm, three reinforcement amounts (XRW): 4, 6 and 8 wt. %, and used to
fabricate cylindrical discs of Ø 50 × 6 mm height with four surface
texture geometries. The epoxy/activated carbon composites were
experimentally evaluated for tribomechanical performance using
Box-Behnken design. Multivariate second-order polynomial models
approximated the influence of XCSAC, XPS and XRW on the tribomechanical
properties. The aim was to use the property response to determine the
effect of texturing on the tribomechanical properties of composites for
automobile applications. The maximum tensile strength value was the
highest for the untextured surface, followed in descending order by
circular, triangular and rectangular surface texture. The maximum
compressive strength value was the highest for the untextured surfaces,
followed in descending order by triangular, circular and rectangular
surface texture. The maximum wear rate value was the highest for the
untextured surfaces, followed in descending order by rectangular,
circular and triangular surface texture, while the maximum coefficient
of friction value was the highest for the circular surface texture,
followed in descending order by triangular and rectangular surface
texture and untextured surfaces. Texturing surfaces were found to reduce
the composites' mechanical properties while decreasing the wear rate and
increasing the coefficient of friction.
Keywords: surface texturing, tribomechanical properties, agro-waste, activated carbon, composites, Box-Behnken design.
Received: 12-08-2024, Revised: 19-11-2024, Accepted: 26-11-2024
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt,
and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.
Abstract: The effects of surface texturing on the tribomechanical properties of epoxy composites reinforced with chemically activated carbon were studied. Activated carbon produced from palm kernel (PKSAC) and coconut shells (CSAC) were composed in three concentrations (XCSAC): 100 vol. % CSAC + 0 vol. % PKSAC, 50 vol. % CSAC + 50 vol. % PKSAC and 0 vol. % CSAC + 100 vol. % PKSAC, three particle sizes (XPS): 60, 105 and 150 μm, three reinforcement amounts (XRW): 4, 6 and 8 wt. %, and used to fabricate cylindrical discs of Ø 50 × 6 mm height with four surface texture geometries. The epoxy/activated carbon composites were experimentally evaluated for tribomechanical performance using Box-Behnken design. Multivariate second-order polynomial models approximated the influence of XCSAC, XPS and XRW on the tribomechanical properties. The aim was to use the property response to determine the effect of texturing on the tribomechanical properties of composites for automobile applications. The maximum tensile strength value was the highest for the untextured surface, followed in descending order by circular, triangular and rectangular surface texture. The maximum compressive strength value was the highest for the untextured surfaces, followed in descending order by triangular, circular and rectangular surface texture. The maximum wear rate value was the highest for the untextured surfaces, followed in descending order by rectangular, circular and triangular surface texture, while the maximum coefficient of friction value was the highest for the circular surface texture, followed in descending order by triangular and rectangular surface texture and untextured surfaces. Texturing surfaces were found to reduce the composites' mechanical properties while decreasing the wear rate and increasing the coefficient of friction.
Keywords: surface texturing, tribomechanical properties, agro-waste, activated carbon, composites, Box-Behnken design.
Received: 12-08-2024, Revised: 19-11-2024, Accepted: 26-11-2024
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt, and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.