P Madhu, B N Sharath, M S Srinath, S Pradeep, Gapsari Femiana, Wahjudi Ari, M R Sanjay, Siengchin Suchart
Department of Mechanical Engineering, Malnad College of Engineering (affiliated with Visvesvaraya Technological University, Belagavi), Hassan, Karnataka, India.
Mechanical Engineering Department, Faculty of Engineering, Brawijaya University, MT Haryono 167, Malang 65145, Indonesia.
iScience. 2025 Apr 26;28(7):112531. doi: 10.1016/j.isci.2025.112531. eCollection 2025 Jul 18.
This study explores the effects of gamma irradiation on the mechanical and water absorption properties of flax fabric-reinforced epoxy composites for aerospace applications. Composites were fabricated using a manual lay-up technique and subjected to irradiation doses of 0, 100, 300, and 500 k rad. The laminate that was irradiated at 300 k rad (L3) had the best tensile, flexural, impact, and interlaminar shear strengths, and it also absorbed the least amount of water. Scanning electron microscopy showed better interfacial bonding and fewer defects, which proved that L3 had better structural integrity and durability. These results highlight the potential of flax-epoxy composites as environmentally sustainable, durable, and lightweight materials for aerospace components. Their ability to withstand extreme conditions makes them suitable for structural panels, protective enclosures, and insulation layers in space applications. Further studies can refine these composites by exploring hybrid reinforcements and advanced fabrication methods for improved performance under diverse environmental conditions.
本研究探讨了γ辐照对用于航空航天应用的亚麻织物增强环氧复合材料的力学性能和吸水性的影响。采用手工铺层技术制备复合材料，并使其接受0、100、300和500千拉德的辐照剂量。在300千拉德下辐照的层压板（L3）具有最佳的拉伸、弯曲、冲击和层间剪切强度，并且其吸水量也最少。扫描电子显微镜显示出更好的界面结合和更少的缺陷，这证明L3具有更好的结构完整性和耐久性。这些结果突出了亚麻 - 环氧复合材料作为航空航天部件的环境可持续、耐用且轻质材料的潜力。它们承受极端条件的能力使其适用于空间应用中的结构面板、防护外壳和绝缘层。进一步的研究可以通过探索混合增强材料和先进制造方法来优化这些复合材料，以在不同环境条件下提高性能。
