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<p>In recent years, composite materials have increasingly replaced metals in various applications, particularly in industries such as automotive and aerospace. One critical application in aerospace is utilizing composite materials in helicopter rotor blades, making them a vital component of the helicopter’s structural integrity. This study evaluates the performance of Poly ether ether ketone (PEEK), glass fiber reinforced PEEK (GF/PEEK), and carbon fiber reinforced PEEK (CF/PEEK) as potential alternatives to 6061-T6 aluminum alloy for rotor blades. Finite element simulations were performed under varying operational conditions, including altitudes and rotor blade angular velocities. The materials were assessed and compared to the aluminum alloy in identical conditions, focusing on factor of safety and deformation. The results demonstrate that CF/PEEK offers comparable performance to 6061-T6 aluminum alloy, with the added advantages of a favorable strength-to-density ratio and long-term cost efficiency derived from improved durability and lower maintenance demands, making it a promising candidate for rotor blade applications.</p> Graphical abstract <p></p>

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Performance assessment of PEEK, GF/PEEK, and CF/PEEK as advanced alternative materials for helicopter rotor blade

  • 期刊论文

  • 发表日期：

    2026年5月29日

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  • Abolfazl Mokhtari,
  • Meysam Jalalvand

摘要

In recent years, composite materials have increasingly replaced metals in various applications, particularly in industries such as automotive and aerospace. One critical application in aerospace is utilizing composite materials in helicopter rotor blades, making them a vital component of the helicopter’s structural integrity. This study evaluates the performance of Poly ether ether ketone (PEEK), glass fiber reinforced PEEK (GF/PEEK), and carbon fiber reinforced PEEK (CF/PEEK) as potential alternatives to 6061-T6 aluminum alloy for rotor blades. Finite element simulations were performed under varying operational conditions, including altitudes and rotor blade angular velocities. The materials were assessed and compared to the aluminum alloy in identical conditions, focusing on factor of safety and deformation. The results demonstrate that CF/PEEK offers comparable performance to 6061-T6 aluminum alloy, with the added advantages of a favorable strength-to-density ratio and long-term cost efficiency derived from improved durability and lower maintenance demands, making it a promising candidate for rotor blade applications.

Graphical abstract