Selective ply-level hybridisation for improved notched response of composite laminates

被引：52

作者：

Furtado, C. ^{[1
]}

Arteiro, A. ^{[1
]}

Catalanotti, G. ^{[1
,2
]}

Xavier, J. ^{[2
,3
]}

Camanho, P. P. ^{[1
,2
]}

机构：

[1] Univ Porto, Fac Engn, DEMec, Rua Dr Roberto Frias S-N, P-4200465 Oporto, Portugal

[2] Inst Ciencia & Inovacao Engn Mecan & Engn, INEGI, Rua Dr Roberto Frias 400, P-4200465 Oporto, Portugal

[3] Univ Tras Os Montes & Alto Douro, CITAB, Engn 1, Apartado 1013, P-5001801 Vila Real, Portugal

来源：

COMPOSITE STRUCTURES | 2016年 / 145卷

关键词：

Thin-ply laminates; Hybrid; Mechanical properties; Notched response; TENSILE-STRENGTH; SIZE; FAILURE;

D O I：

10.1016/j.compstruct.2016.02.050

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This work presents an experimental study on the effect of ply-level hybridisation on the tensile unnotched and notched response of composite laminates. In a first assessment, notched tests were performed on laminates with nominal ply thicknesses between 0.03 mm and 0.30 mm. From the understanding of the effect of ply thickness on the damage mechanisms that govern the notched response of laminates, the concept of ply-level hybridisation is introduced, which consists in combining plies of different grades. A uniform combination of thin and conventional plies resulted in a hybrid laminate with intermediate notched response. Selective hybridisation, where thin off-axis plies are combined with thicker 0 degrees plies, resulted in a globally enhanced notched behaviour without compromising the unnotched and fatigue responses. This work clearly shows how ply-level hybridisation, when designed to trigger specific damage mechanisms, can be used to improve the notched response of composite laminates. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：1 / 14

页数：14

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