Mode I fracture characterization of a hybrid cork and carbon-epoxy laminate

被引：14
作者：
Fernandes, R. [1 ]
de Moura, M. F. S. F. [1 ]
Silva, F. G. A. [2 ]
Dourado, N. [3 ]
机构：
[1] Univ Porto, FEUP, DEMec, P-4200465 Oporto, Portugal
[2] INEGI Inst Engn Mecan & Gestao Ind, P-4200465 Oporto, Portugal
[3] Univ Tras os Montes & Alto Douro, CITAB, P-5000801 Quinta De Prados, Vila Real, Portugal
来源：
COMPOSITE STRUCTURES | 2014年 / 112卷
关键词：
Hybrid laminate; Carbon-epoxy; Cork; Mode I toughness; Cohesive zone modelling; LOW-VELOCITY IMPACT; COMPOSITES; DELAMINATION; RESISTANCE; DAMAGE; PERFORMANCE; PREDICTION; BEHAVIOR;
D O I：
10.1016/j.compstruct.2014.02.019
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this work fracture characterization under model loading of a hybrid laminate composed by a unidirectional carbon-epoxy composite and cork was performed using the Double Cantilever Beam test. An equivalent crack length procedure based on specimen compliance and Timoshenko beam theory applied to the composed beam was adopted to evaluate the fracture energy. The procedure revealed to be quite effective and it was validated numerically by means of finite element analysis including cohesive zone modelling. The analysis of the experimental results has shown that an increase of 32% of mode I toughness relative to monolithic carbon-epoxy laminate was obtained, which proves that hybridization using cork results in a quite effective procedure to increase interlaminar toughness of composite laminates. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：248 / 253
页数：6
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