Damage development in woven carbon fiber/epoxy composites modified with carbon nanotubes under tension in the bias direction

被引：57

作者：

De Greef, Niels ^{[1
]}

Gorbatikh, Larissa ^{[1
]}

Lomov, Stepan V. ^{[1
]}

Verpoest, Ignaas ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Heverlee, Belgium

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2011年 / 42卷 / 11期

关键词：

Polymer-matrix composites (PMCs); Nano-structures; Mechanical properties; Acoustic emission; SHEAR-STRENGTH; REINFORCEMENT; BEHAVIOR; FATIGUE;

D O I：

10.1016/j.compositesa.2011.07.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The study investigates the effect of carbon nanotubes (CNTs) on the damage development in a woven carbon fiber/epoxy composite under quasi-static tension in the bias direction. The composite is produced by the resin transfer molding and contains 0.25 wt.% of CNTs in the matrix. The tensile tests are carried Out till different strain levels and are accompanied with acoustic emission (AE) registration. The nano-modified composite possesses a higher stiffness and strain-to-failure. It also exhibits a significantly increased AE activity, both in terms of the number of events and the energy level, but reveals a lower crack density. The combined analysis of the AE data and X-ray images indicates that in the nano-modified composite cracks progress through the material in smaller jumps than in the virgin composite. The crack faces in the composite with CNTs also display a fine web of secondary fractures, which is not detected in the virgin composite. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1635 / 1644

页数：10

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