Liu Jia Long, Mencattelli Lorenzo, Zhi Jie, Chua Ping Yee, Tay Tong-Earn, Tan Vincent Beng Chye
Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117565, Singapore.
Helicoid Industries Inc., 82663 Redford Way, Indio, CA 92201, USA.
Polymers (Basel). 2022 Jan 25;14(3):475. doi: 10.3390/polym14030475.
Glass-Fiber-Reinforced Polymer (GFRP) laminates are widely used in the automotive and marine industries such as auto bodies and boat hulls. Decreasing the weight and improving the reparability of GFRP parts will cut down material usage, fuel consumption and repair costs. This study shows a bio-inspired helicoidal stacking configuration that significantly improves the impact performance and fiber damage resistance of GFRP laminates. For similar impact performance in terms of perforation energy, the helicoidal GFRP laminate is 20% lighter than the conventional quasi-isotropic GFRP laminate. Upon impact, delaminations and matrix splits link-up and grow extensively throughout the helicoidal laminate. This effectively reduces fiber damage and improves impact performance. Because helicoidal GFRP laminates are resistant to fiber damage and composite healing agents can effectively repair non-fiber damage, embedding healing agents into helicoidal GFRP results in lightweight, inexpensive and healable laminates.
玻璃纤维增强聚合物（GFRP）层压板广泛应用于汽车和船舶工业，如汽车车身和船体。减轻GFRP部件的重量并提高其可修复性将减少材料使用、燃料消耗和维修成本。本研究展示了一种受生物启发的螺旋堆叠结构，该结构显著提高了GFRP层压板的抗冲击性能和抗纤维损伤能力。在穿孔能量方面具有相似的冲击性能时，螺旋GFRP层压板比传统的准各向同性GFRP层压板轻20%。受到冲击时，分层和基体开裂会在整个螺旋层压板中广泛连接并扩展。这有效地减少了纤维损伤并提高了冲击性能。由于螺旋GFRP层压板具有抗纤维损伤能力，并且复合愈合剂可以有效地修复非纤维损伤，因此将愈合剂嵌入螺旋GFRP中可得到轻质、廉价且可自愈的层压板。
