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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Composite Materials

Background:

  • Auxetic materials possess a negative Poisson's ratio, enabling unique deformation and energy absorption capabilities.
  • Practical applications of auxetic structures are limited by their inherent mechanical strength and performance under load.
  • Optimizing composite fabrication is crucial for realizing the full potential of auxetic materials.

Purpose of the Study:

  • To enhance the energy absorption and mechanical properties of auxetic structures through design optimization.
  • To investigate the impact of different resin matrices on the performance of auxetic composites.
  • To analyze the influence of resin selection on Young's modulus, yield strength, and energy absorption capacity.

Main Methods:

  • Fabrication of auxetic composites using various resin matrices.
  • Systematic experimental testing involving compressive loading of the composite structures.
  • Comparative analysis of mechanical properties and energy absorption of different composite formulations.

Main Results:

  • Auxetic composites demonstrated significantly improved energy absorption compared to pure resin samples.
  • Vinylester resin composites exhibited the highest Young's modulus, yield strength, and energy absorption capacity.
  • Synergistic interaction between the auxetic structure and vinylester resin contributed to superior performance.

Conclusions:

  • Resin matrix selection is critical for optimizing the mechanical performance of auxetic composites.
  • Vinylester resin is a highly effective matrix for enhancing energy absorption and mechanical strength in auxetic structures.
  • These findings support the development of advanced auxetic composites for impact mitigation in demanding industries.