Fracture toughness determination and mechanism for mode-I interlaminar failure of 3D-printed carbon-Kevlar composites

被引：16

作者：

Dang, Zhilong ^{[1
]}

Cao, Junchao ^{[1
]}

Pagani, Alfonso ^{[2
]}

Zhang, Chao ^{[1
,3
]}

机构：

[1] Northwestern Polytech Univ, Sch Aeronaut, Dept Aeronaut Struct Engn, Xian 710072, Shaanxi, Peoples R China

[2] Politecn Torino, Dept Mech & Aerosp Engn, Mul2 Lab, Turin, Italy

[3] Northwestern Polytech Univ, Sch Civil Aviat, Xian 710072, Shaanxi, Peoples R China

来源：

COMPOSITES COMMUNICATIONS | 2023年 / 39卷

基金：

中国国家自然科学基金;

关键词：

Additive manufacturing; Interlaminar fracture toughness; Kevlar fiber; Hybrid fiber interface; Fiber bridging; DELAMINATION GROWTH; R-CURVE;

D O I：

10.1016/j.coco.2023.101532

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Additive manufacturing for continuous fiber composite exhibits great potential for the fabrication of sophisti-cated structural components. Nevertheless, interlaminar characteristics of printed parts have remained an open research question. This study aims to evaluate the mode-I interlaminar fracture property of 3D-printed contin-uous fiber reinforced composites with different interlaminar interfaces adopting carbon and Kevlar fiber. Three different double cantilever beam (DCB) configurations are considered, including carbon/carbon, Kevlar/Kevlar and carbon/Kevlar hybrid interface. It is observed that the interlaminar failure of carbon fiber was seriously affected by the void defects caused by 3D-printed. It is further found that Kevlar fiber could greatly improve the interlaminar fracture toughness attributed to the better bonding of interlayers and the denser bridging fiber. Finally, a novel idea for the hybrid interface is provided based on the characterization study of the carbon-Kevlar composites.

引用

页数：6

共 25 条

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