Influence of fibre steering on the bearing performance of bolted joints in 3D printed pseudo-woven CFRP composites

被引：0
|
作者：
Li, Aonan [1 ]
Zhang, Haoqi [1 ]
Yang, Dongmin [1 ]
机构：
[1] Univ Edinburgh, Inst Mat & Proc, Sch Engn, Edinburgh EH9 3FB, Scotland
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2024年 / 181卷
关键词：
CFRP; Bolted joints; Fibre steering; 3D printing; CONTINUOUS CARBON-FIBER; MECHANICAL-PROPERTIES; THERMOPLASTIC COMPOSITES; VOID CONTENT; STRENGTH; DAMAGE; PRESSURE; CYCLE;
D O I：
10.1016/j.compositesa.2024.108150
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Aiming to improve the bearing performance of bolted joints in carbon fibre reinforced polymer (CFRP) composites, this study investigates the impact of steered fibre paths around the hole edge within pseudo-woven (interlaced) composites that are manufactured by 3D printing. The influence of fibre steering on the crack initiation and propagation was examined through double-lap bearing tests performed on four distinct cases. Parallel to the comprehensive experimental study, digital image correlation (DIC) and X-ray computed microtomography (micro-CT) scans were performed to aid in understanding and identifying the various damage mechanisms in each specimen type. Results revealed that different patterns provided varying bearing abilities, with an employed pattern improving the initial bearing strength, initial fracture energy and ultimate fracture energy of the 3D printed pseudo-woven composite by 23.5%, 363.7% and 29.6%, respectively. Consequently, fibre steering in composites is found to be a promising method to tailor the bearing behaviour of bolted joints as required.
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页数：10
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