The mode II interlaminar fracture toughness and healing efficiency of repeatable self-healing composite

被引：11
|
作者：
Wang, Zhen [1 ]
Li, Yan [1 ,2 ]
Tu, Haoyun [1 ]
机构：
[1] Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai 200092, Peoples R China
[2] Tongji Univ, Minist Educ, Key Lab Adv Civil Engn Mat, Shanghai 200092, Peoples R China
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2022年 / 161卷
基金：
中国国家自然科学基金;
关键词：
Smart material; Laminates; Fracture toughness; Electronic microscopy; DAMAGE; BEHAVIOR;
D O I：
10.1016/j.compositesa.2022.107096
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hollow glass fibers containing self-healing resin (SR) and two types of microcapsules (HGFs-Ms) that can repeatedly heal the crack at the same place were manufactured. The repeatable self-healing carbon-epoxy composites (RSH-CFRPs) were made by incorporating the HGFs-Ms and microcapsules containing hardener into the mid-plane. The effects of the diameter and length of HGFs-Ms, the content of SR and the diameter of the microcapsules containing SR inside HGFs-Ms on the mode II interlaminar fracture toughness, 1st and 2nd healing efficiencies of the RSH-CFRPs were studied by performing end-notched flexure tests. The optimal combination of the above parameters was obtained which could result in 69.77% improvement in the fracture toughness compared to virgin CFRPs and could accomplish 100% healing efficiency at the same place twice. The toughening and healing mechanisms of the RSH-CFRPs were deeply analyzed, which proved the effectiveness of the self-healing method proposed in this study.
引用
收藏
页数：11
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