Abstract: Microcapsule self-healing resin mineral composites, a type of self-healing intelligent material, have found widespread use. The timely release of healing agents from microcapsules to repair microcracks generated in the matrix is crucial for ensuring self-healing performance. Based on the extended finite element method combined with the cohesive force model, the effects of the mechanical properties ratio between microcapsules and epoxy resin matrix and the interface properties on the crack growth path and microcapsules’ crackability under different bias cracks were analyzed in this work. Our findings reveal that: (i) crack propagation paths primarily depend on the fracture property ratio between the microcapsule and matrix, with elastic properties playing a less significant role;(ii) given sufficient adhesive strength at the interface, the fracture strength ratio of the microcapsule to the substrate is the main factor influencing microcapsule cracking relative to the fracture toughness ratio;(iii) a larger crack offset distance makes crack deflection easier and microcapsule cracking more difficult;(iv)the existence of interfacial defects is conducive to the formation of interfacial cracks, which is not conducive to the cracking of microcapsules. These findings offer a theoretical basis for applying self-healing materials in engineering contexts.
李辉, 郭润兰, 黄华, 黄晖阳. 基于扩展有限元方法的自愈微胶囊和基体力学性能适配的研究[J]. 材料导报, 2024, 38(13): 22100029-8.
LI Hui, GUO Runlan, HUANG Hua, HUANG Huiyang. Study on the Adaptation of Self-healing Microcapsules to Matrix Mechanical Properties Based on Extended Finite Element Method. Materials Reports, 2024, 38(13): 22100029-8.
1 Ma Y, Li F, Wang L , et al. The International Journal of Advanced Ma-nufacturing Technology, 2021, 113, 1143. 2 Guo R L, Fan Y Q, Wang G S, et al. Journal of Composite Materials, 2022, 39(2), 834 (in Chinese). 郭润兰, 范雅琼, 王广书, 等. 复合材料学报, 2022, 39(2), 834. 3 Wang X, Liang J, Ren J, et al. Journal of Building Engineering, 2023, 65, 105773. 4 Han N X, Xing F A. Materials, 2016, 10(1), 2. 5 Mauludin L M, Oucif C, Rabczuk T. Frontiers of Structural and Civil Engineering, 2020, 14(3), 792. 6 Li W, Jiang Z, Yang Z. Materials, 2017, 10(6), 589. 7 Fan Y Q. Study on damage performance of resin mineral composite material for machine tools and their self-healing microcapsule cracking performance. Master's Thesis, Lanzhou University of Technology, China, 2022 (in Chinese). 范雅琼. 机床用树脂矿物复合材料损伤性能及其自愈合微胶囊可裂性研究. 硕士学位论文, 兰州理工大学, 2022. 8 Wang H, Wang J, Chen J. Engineering Fracture Mechanics, 2014, 132, 104. 9 Zhu Y F, Zhao X Z, Si C D, et al. Materials Reports, 2022, 36(10), 44 (in Chinese). 朱月风, 赵向臻, 司春棣, 等. 材料导报, 2022, 36(10), 44. 10 Mauludin L M, Oucif C. Frontiers of Structural and Civil Engineering, 2018, 13(2013), 1. 11 Zhao Z. Study on fracture behavior of microcapsule in self-healing composite material. Master's Thesis. Tianjin University, China, 2014 (in Chinese). 赵钊. 自修复复合材料中微胶囊破裂行为研究. 硕士学位论文, 天津大学, 2014. 12 Chen C, Ji H, Wang H. Journal of Nanoscience and Nanotechnology, 2013, 13(10), 6679. 13 Mrma A, Dmi A , Smsa B , et al. Composites Communications, 2022, 32, 101150. 14 Wang W, Sadeghipou K, Baran G. Composites Part A Applied Science & Manufacturing, 2008, 39(6), 956. 15 Alfaro M V C, Suiker A S J, Verhoosel C V, et al. European Journal of Mechanics-A/Solids, 2010, 29(2), 119. 16 Bush M B. International Journal of Fracture, 1997, 88(3), 215. 17 Barenblatt G I. Journal of Applied Mathematics and Mechanics, 1959, 23(3), 622. 18 Dugdale D S. Journal of the Mechanics and Physics of Solids, 1960, 8(2), 100. 19 Lin D. Journal of Mechanical Engineering, 2017, 53(22), 176. 20 Wang X Q. Meso-finite element analysis of the tensile properties of composites based on cohesive mode. Ph. D. Thesis, Harbin Engineering University, China, 2012(in Chinese). 王晓强. 基于内聚力模型的复合材料拉伸性能细观有限元分析. 博士学位论文, 哈尔滨工程大学, 2012. 21 Mauludin L M, Zhuang X, Rabczuk T. Composite Structures, 2018, 196, 63. 22 Belytschko T, Black T. International Journal for Numerical Methods in Engineering, 1999, 45(5), 601. 23 Melenk J, Babuska I. Computer Methods in Applied Mechanics and Engineering, 1996, 39(1-4), 289. 24 Wang Z , Song Z , Zhang J , et al. Materials & Design, 2012, 37, 582. 25 Sun P P. Research on strength and pore structure of microcapsule based self-healing cementitious composites. Master's Thesis, Shenzhen University, China, 2016 (in Chinese). 孙培培. 微胶囊自修复水泥基材料的强度与孔结构研究. 硕士学位论文, 深圳大学, 2016. 26 Rule J D, Sottos N R, White S R. Polymer, 2007, 48(12), 3520.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2024, Vol. 38 
