Research on the multiple successive impact resistant behaviors of biomimetic laminated basalt fiber-reinforced composite with double-twisted Bouligand structure

AbstractBasalt fiber-reinforced composite (BFRC) is extensively used in various fields such as rail transportation and aerospace. However, how to design the structure of BFRC to optimize its impact resistance remains a great challenge. Herein, inspired by the double-twisted Bouligand structure of coelacanth scales, a biomimetic BFRC is prepared. Significantly, the peak impact force of double-twisted BFRC (DT-BFRC) is 3408.12 N, which increases by 48.56% compared with unidirectionally laminated BFRC (UL-BFRC). The maximum residual elastic modulus of DT-BFRC reaches 7.88 J, which is 236.75% higher than that of UL-BFRC. This work offers a promising way to efficiently develop impact resistant BFRC.Keywords: Biomimetic structural designdouble-twisted Bouligand structurebasalt fiberlow-velocity impactimpact resistance Additional informationFundingThis work is supported by the National Key R&D Program of China (2018YFA0703300 and 2021YFF0500100), the National Natural Science Foundation of China (Project No. 52022036, 51975247 and 52105301), the Natural Science Foundation of Jilin Province (No. 20220101220JC), and Open Project Program of Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Ministry of Education, Changchun University of Science and Technology (CMNM-KF202101).