Internal geometry of woven composite laminates with "fuzzy" carbon nanotube grafted fibers

被引：30

作者：

Aravand, M. Ali ^{[1
,2
,4
]}

Shishkina, Oksana ^{[1
,3
]}

Straumit, Ilya ^{[1
]}

Liotta, Andrew H. ^{[2
]}

Wicks, Sunny S. ^{[2
]}

Wardle, Brian L. ^{[2
]}

Lomov, Stepan V. ^{[1
,3
]}

Gorbatikh, Larissa ^{[1
,3
]}

机构：

[1] Katholieke Univ Leuven, Dept Mat Engn MTM, Kasteelpk Arenberg 44, B-3001 Leuven, Belgium

[2] MIT, Dept Aeronaut & Astronaut, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[3] Skolkovo Innovat Ctr, Skolkovo Inst Sci & Technol, Ctr Design Mfg & Mat, 3 Nobel St, Moscow 143026, Russia

[4] Queens Univ Belfast, Sch Mech & Aerosp Engn, Belfast BT9 5AH, Antrim, North Ireland

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2016年 / 88卷

关键词：

Polymer-matrix composites; Nano-structures; Microstructures; CT analysis; INTERLAMINAR SHEAR-STRENGTH; RAY COMPUTED-TOMOGRAPHY; MICRO-CT ANALYSIS; HIERARCHICAL COMPOSITES; CERAMIC FIBERS; MODE-I; REINFORCEMENT; COMPRESSION; GROWTH; ENHANCEMENT;

D O I：

10.1016/j.compositesa.2016.06.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Radially aligned carbon nanotubes (A-CNTs) grown on micron-scale fibers promise structural composites with high mechanical performance and multi-functional properties. Changes in the internal structure of woven composite laminates after A-CNT growth are studied here utilizing micro-computed tomography. The laminates are produced by vacuum impregnation in a closed mold with and without clamping pressure. Two A-CNT lengths are investigated: 4-6 mu m and 17-19 mu m. A-CNTs were found to increase the distance between fibers, scaled by the A-CNT length. This "swelling" resulted in an increased cross-sectional area, crimp and in-plane misalignment of the yarns. The laminate thickness doubled for laminates with long A-CNTs compared to shorter ones. The laminate with long A-CNTs produced under pressure showed a remarkable alteration of the internal structure. Fibers migrated within the fabric plane, filling almost completely the resin rich pockets. Further research is needed to understand the effect of these changes on the composite mechanical performance. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：295 / 304

页数：10

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