The enhancement of adhesively-bonded aerospace-grade composite joints using steel fibres

被引：22

作者：

Quan, Dong ^{[1
]}

Labarga Urdaniz, Josu ^{[2
]}

Rouge, Clemence ^{[1
]}

Ivankovic, Alojz ^{[1
]}

机构：

[1] Univ Coll Dublin, Sch Mech & Mat Engn, Dublin, Ireland

[2] Univ Politecn Madrid, ETSI Caminos Canales & Puertos, Madrid, Spain

来源：

COMPOSITE STRUCTURES | 2018年 / 198卷

关键词：

Ductile steel fibres; Composite adhesive joints; Fracture toughness; TOUGHENED EPOXY ADHESIVE; MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; CRYOGENIC TEMPERATURES; LIQUID RUBBER; RESISTANCE; BEHAVIOR; POLYPROPYLENE; ARCHITECTURE; PARTICLES;

D O I：

10.1016/j.compstruct.2018.04.071

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Ductile steel fibres with high stiffness of 193 GPa, high strain-to-failure of 20% and diameter of 22 mu m were used to enhance fracture toughness of composite adhesive joints. Two nano-toughened structural adhesives with significantly different mechanical and fracture properties were used to bond aerospace-grade composite substrates. Steel fibres were placed in the adhesive layer either longitudinally or transversely to the crack growth direction. Mode-I and mode-II fracture behaviour of the composite adhesive joints were studied using double cantilever beam test and end-loaded split test, respectively. The incorporation of steel fibres significantly increased both mode-I and mode-II fracture toughness, irrespective of the adhesive used. The improvement of mode-I and mode-II fracture energies was more pronounced when the steel fibres were placed transversely to the crack growth direction, due to the increased level of steel fibre bridging.

引用

页码：11 / 18

页数：8

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