Energy Absorption Behavior of Al-SiC-Graphene Composite Foam under a High Strain Rate

Area of Science:

• Materials Science
• Mechanical Engineering
• Nanotechnology

Background:

• Advanced composite foams are crucial for energy absorption applications.
• Aluminum-silicon carbide foams offer a balance of properties but can be further enhanced.
• Graphene reinforcement presents an opportunity to improve mechanical performance.

Purpose of the Study:

• To investigate the compression deformation behavior of graphene-reinforced aluminum-silicon carbide composite foams.
• To determine the effect of strain rates and relative density on the mechanical properties.
• To optimize key parameters influencing plateau stress and energy absorption.

Main Methods:

• Production of closed-cell aluminum (Al)-silicon carbide (SiC) particle (15 wt.%) with graphene (0.5 wt.%) reinforced hybrid composite foam via the melt route.
• Experimental evaluation of compression deformation behavior at strain rates from 500 s^-1 to 2760 s^-1.
• Application of Analysis of Variance (ANOVA) for parameter optimization and contribution analysis.

Main Results:

• Plateau stress and energy absorption of the hybrid composite foam increase with higher strain rates.
• Mechanical performance is also responsive to relative density within the experimental domain.
• Optimized parameters significantly influence plateau stress and energy absorption.

Conclusions:

• Graphene reinforcement enhances the mechanical properties of Al-SiC composite foams.
• Strain rate and relative density are critical factors for optimizing energy absorption.
• The developed composite foam shows promise for high-performance energy absorption applications.