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<p>The current work examines the buckling, damping, and vibration characteristics of hybrid sandwich plates reinforced with graphene. The sandwich plate is composed of graphene/epoxy/carbon fiber-reinforced composite skins and graphene/alumina fillers/epoxy reinforced composite core. The graphene/alumina filler-reinforced hybrid composite cores were fabricated using the sonication technique. Experiments were conducted to investigate the hybrid composite cores' microstructure and mechanical properties. The finite element formulation was built based on higher-order theory. The structural characteristics of the sandwich plates derived by the present formulation are compared with those of other authors and show excellent agreement. This paper also examines the impact of graphene, thickness ratio, and end conditions on the damping, buckling, and vibration characteristics of hybrid composites.</p>

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Comprehensive Analysis of Frequency, Damping, and Buckling of Sandwich Plates with Hybrid Graphene–Alumina-Reinforced Cores

  • 期刊论文

  • 发表日期：

    2025年11月10日

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  • Khadra Mokadem,
  • N. S. Abd EL-Gawaad,
  • Abdullah Alzlfawi,
  • N. Beemkumar,
  • Ali Khatibi,
  • Abinash Mahapatro,
  • Ashwin Jacob,
  • Rajeshkumar Selvaraj

摘要

The current work examines the buckling, damping, and vibration characteristics of hybrid sandwich plates reinforced with graphene. The sandwich plate is composed of graphene/epoxy/carbon fiber-reinforced composite skins and graphene/alumina fillers/epoxy reinforced composite core. The graphene/alumina filler-reinforced hybrid composite cores were fabricated using the sonication technique. Experiments were conducted to investigate the hybrid composite cores' microstructure and mechanical properties. The finite element formulation was built based on higher-order theory. The structural characteristics of the sandwich plates derived by the present formulation are compared with those of other authors and show excellent agreement. This paper also examines the impact of graphene, thickness ratio, and end conditions on the damping, buckling, and vibration characteristics of hybrid composites.