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This study explores the aeroelastic properties of aerospace composites reinforced with shape memory alloys (SMAs), specifically focusing on the dynamic responses of Glass Fiber Reinforced Polymer (GFRP) and Carbon Fiber Reinforced Polymer (CFRP) composites embedded with pre-strained Nitinol wires. High aspect ratio specimens underwent extensive wind tunnel testing to assess vibrational behavior and aeroelastic stability under various wind velocities. Frequency Response Function (FRF) analysis revealed that SMA integration significantly affects the composites’ stiffness and damping characteristics, altering their natural frequencies and dynamic responses. The results demonstrate that Nitinol embedding tailors the aeroelastic properties of the composites in a velocity-dependent manner, enhancing their performance and stability. This research underscores the potential of SMAs to advance aerospace composite design and functionality, enabling the customization of materials for optimized aeroelastic properties.

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Mitigating Aeroelastic Instability Through the Integration of Nitinol in Composite Structures

  • 会议论文

  • 发表日期：

    2025年

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  • Kartik S. Tandel,
  • Rammohan Bhanumurthy,
  • Satyanarayana Murthy,
  • K. Venkat Ramaiah,
  • C. N. Saikrishna

摘要

This study explores the aeroelastic properties of aerospace composites reinforced with shape memory alloys (SMAs), specifically focusing on the dynamic responses of Glass Fiber Reinforced Polymer (GFRP) and Carbon Fiber Reinforced Polymer (CFRP) composites embedded with pre-strained Nitinol wires. High aspect ratio specimens underwent extensive wind tunnel testing to assess vibrational behavior and aeroelastic stability under various wind velocities. Frequency Response Function (FRF) analysis revealed that SMA integration significantly affects the composites’ stiffness and damping characteristics, altering their natural frequencies and dynamic responses. The results demonstrate that Nitinol embedding tailors the aeroelastic properties of the composites in a velocity-dependent manner, enhancing their performance and stability. This research underscores the potential of SMAs to advance aerospace composite design and functionality, enabling the customization of materials for optimized aeroelastic properties.