<p>This study investigates the mechanical, wear, and vibrational behavior of Al6061 composites reinforced with fillers such as aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) and silicon carbide (SiC) under different boundary conditions. Three composite samples with varying filler compositions were fabricated as sample 310 (91% Al, 5% Al<sub>2</sub>O<sub>3</sub>), sample 311 (91% Al, 5% SiC), and sample 312 (86% Al, 5% Al<sub>2</sub>O<sub>3</sub>, 5% SiC). The samples were characterized by FTIR analysis where a lower crystal size was obtained for 310 where the grain boundary fraction obtained than other specimens, causing a lower density. From the tensile tests results, its revealed that sample 310 exhibited the highest tensile strength (177&#xa0;MPa) but lower stiffness, while sample 311 showed the highest stiffness but lower tensile strength (67&#xa0;MPa). Sample 312 presented a balanced performance with moderate strength and stiffness. Modal analysis was performed to assess the vibrational response of the composites under clamped-free (CF) and clamped–clamped (CC) boundary conditions. The clamped–clamped configuration yielded significantly higher natural frequencies across all samples due to increased stiffness, with sample 310 showing the highest frequencies, especially in the CF configuration. These findings highlighted the performance in terms of wear, strength, stiffness, and vibrational properties of Al6061 composites reinforced with Al<sub>2</sub>O<sub>3</sub> and SiC, providing valuable insights for designing materials for applications requiring specific mechanical and vibrational characteristics.</p>

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Mechanical, Tribological and Vibrational Analysis of Al6061-Based Composites Reinforced with Aluminum Oxide and Silicon Carbide

  • Abin Paul,
  • M Sreerag,
  • M Jishnu,
  • Rajeshkumar Selvaraj,
  • Manuel George,
  • P Ashwath

摘要

This study investigates the mechanical, wear, and vibrational behavior of Al6061 composites reinforced with fillers such as aluminum oxide (Al2O3) and silicon carbide (SiC) under different boundary conditions. Three composite samples with varying filler compositions were fabricated as sample 310 (91% Al, 5% Al2O3), sample 311 (91% Al, 5% SiC), and sample 312 (86% Al, 5% Al2O3, 5% SiC). The samples were characterized by FTIR analysis where a lower crystal size was obtained for 310 where the grain boundary fraction obtained than other specimens, causing a lower density. From the tensile tests results, its revealed that sample 310 exhibited the highest tensile strength (177 MPa) but lower stiffness, while sample 311 showed the highest stiffness but lower tensile strength (67 MPa). Sample 312 presented a balanced performance with moderate strength and stiffness. Modal analysis was performed to assess the vibrational response of the composites under clamped-free (CF) and clamped–clamped (CC) boundary conditions. The clamped–clamped configuration yielded significantly higher natural frequencies across all samples due to increased stiffness, with sample 310 showing the highest frequencies, especially in the CF configuration. These findings highlighted the performance in terms of wear, strength, stiffness, and vibrational properties of Al6061 composites reinforced with Al2O3 and SiC, providing valuable insights for designing materials for applications requiring specific mechanical and vibrational characteristics.