Manufacturing and testing of a CFRC sandwich cylinder with Kagome cores

被引：147

作者：

Fan, Hualin ^{[1
,2
]}

Fang, Daining ^{[1
]}

Chen, Liming ^{[1
]}

Dai, Zheng ^{[1
]}

Yang, Wei ^{[1
,3
]}

机构：

[1] Tsinghua Univ, Sch Aerosp, Beijing 100084, Peoples R China

[2] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

[3] Zhejiang Univ, Univ Off, Hangzhou 310027, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2009年 / 69卷 / 15-16期

基金：

中国国家自然科学基金;

关键词：

Structural composites; Sandwich; Mechanical properties; Filament winding; COMPOSITE GRIDS; DESIGN; PANELS; FABRICATION;

D O I：

10.1016/j.compscitech.2009.08.012

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Filament winding and twice co-curing processes were proposed to make a carbon fiber reinforced composite (CFRC) sandwich cylinder with Kagome cores. Axial compression was carried out to reveal the stiffness and load capacity of the fabricated sandwich cylinder. Compared with the stiffened cylinder with similar dimensions and mass, the sandwich cylinder is shown to be stiffer and stronger by several times. Restrained by the double skins, the buckling of lattice ribs is effectively suppressed, leading to the elimination of the dominant failure mode. Skin crippling and strength failure were observed in the testing to be the competing failure mechanisms of the lattice sandwich cylinder. The prediction based on the weakest link of these mechanisms only overestimates the testing load capacity by 30%. The novel sandwich structure shows the promise of lattice composites in upgrading the mechanical properties. (C)@ 2009 Elsevier Ltd. All rights reserved.

引用

页码：2695 / 2700

页数：6

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