Carbon composites based on multi-axial multi-ply stitched preforms. Part 7: Mechanical properties and damage observations in composites with sheared reinforcement

被引：21

作者：

Truong, T. C. ^{[1
]}

Ivanov, D. S. ^{[1
]}

Klimshin, D. V. ^{[1
,2
]}

Lomov, S. V. ^{[1
]}

Verpoest, I. ^{[1
]}

机构：

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

[2] St Petersburg State Polytech Univ, St Petersburg, Russia

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2008年 / 39卷 / 09期

关键词：

Fabrics/textiles; Laminates; Mechanical properties; FEA; Mechanical testing;

D O I：

10.1016/j.compositesa.2008.05.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Biaxial multi-ply carbon fabrics (+45 degrees/-45 degrees and 0 degrees/90 degrees) were sheared up to 30 degrees, 45 degrees and 50 degrees using a shearing frame. The carbon/epoxy composite plates were made using resin transfer moulding. Tensile properties were measured in two principal directions and compared with results computed with the classical laminate theory and meso-scale finite element analysis. Damage initiation in laminates due to tensile loading was investigated using acoustic emission and X-ray radiography. Shearing changes the fibre orientation and hence the behaviour of the composites, leading to the shear angle dependence of damage initiation. Thermal cracks in composites with unsheared reinforcements, induced by post-curing, are not present in the composites with sheared reinforcement. The analysis of the experimental observations of the damage initiation and development is supported by finite element analysis. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1380 / 1393

页数：14

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