Kim Hyeong Jin, Cho Jin-Rae
Department of Mechanical Engineering, University College London, London WC1E7JE, UK.
Department of Naval Architecture and Ocean Engineering, Hongik University, Jochiwon, Sejong 30016, Republic of Korea.
Nanomaterials (Basel). 2024 Dec 16;14(24):2020. doi: 10.3390/nano14242020.
With the growing demand for wind energy, the development of advanced materials for wind turbine support structures and blades has garnered significant attention in both industry and academia. In previous research, the authors investigated the incorporation of graphene platelets (GPLs) into wind turbine blades, focusing on the structural performance and cost-effectiveness relative to conventional fiberglass composites. These studies successfully demonstrated the potential advantages of GPL reinforcement in improving blade performance and reducing the blade's weight and costs. Building upon prior work, the present study conducts a detailed investigation into the static bending behavior of GPL-reinforced wind turbine blades, specifically examining the impact of crack location and length. A finite element model of the SNL 61.5 m wind turbine blade was rigorously developed and validated through comparison with the existing literature to ensure its accuracy. Comprehensive parametric analyses were performed to assess deflection under various crack lengths and positions, considering both flapwise and edgewise bending deformations. The findings indicate that GPL-reinforced blades exhibit reduced sensitivity to crack propagation compared to traditional fiberglass blades. Furthermore, the paper presents a thorough parametric analysis of the effects of crack location and length on blade performance.
随着对风能需求的不断增长，用于风力涡轮机支撑结构和叶片的先进材料的开发在工业界和学术界都引起了极大关注。在先前的研究中，作者研究了将石墨烯片层（GPLs）掺入风力涡轮机叶片中，重点关注相对于传统玻璃纤维复合材料的结构性能和成本效益。这些研究成功证明了GPL增强在改善叶片性能以及减轻叶片重量和成本方面的潜在优势。在先前工作的基础上，本研究对GPL增强风力涡轮机叶片的静态弯曲行为进行了详细研究，特别考察了裂纹位置和长度的影响。通过与现有文献比较，严格建立并验证了SNL 61.5米风力涡轮机叶片的有限元模型，以确保其准确性。考虑到挥舞方向和边缘方向的弯曲变形，进行了全面的参数分析，以评估在各种裂纹长度和位置下的挠度。研究结果表明，与传统玻璃纤维叶片相比，GPL增强叶片对裂纹扩展的敏感性降低。此外，本文还对裂纹位置和长度对叶片性能的影响进行了全面的参数分析。
