Influence of electrospun Nylon 6,6 nanofibrous mats on the interlaminar properties of Gr-epoxy composite laminates

被引：106

作者：

Palazzetti, R. ^{[1
]}

Zucchelli, A. ^{[1
]}

Gualandi, C. ^{[2
,3
]}

Focarete, M. L. ^{[2
,3
]}

Donati, L. ^{[1
]}

Minak, G. ^{[1
]}

Ramakrishna, S. ^{[4
,5
]}

机构：

[1] Univ Bologna, Mech Engn Dept DIEM, I-40136 Bologna, Italy

[2] Bologna RU Univ Bologna, Dept Chem Giacomo Ciamidan, I-40132 Bologna, Italy

[3] Bologna RU Univ Bologna, Natl Consortium Mat Sci & Technol INSTM, I-40132 Bologna, Italy

[4] Natl Univ Singapore, Dept Mech Engn, Singapore 119077, Singapore

[5] King Saud Univ, Riyadh 11451, Saudi Arabia

来源：

COMPOSITE STRUCTURES | 2012年 / 94卷 / 02期

关键词：

Polymer electrospinning; Composite laminates; Delamination; Mechanical tests; ACOUSTIC-EMISSION; DELAMINATION; FRACTURE;

D O I：

10.1016/j.compstruct.2011.08.019

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The present work aims at investigating the influence of electrospun Nylon 6,6 nanofibrous mat to interlaminar strength. Mode I and the Mode II fracture mechanics of virgin and nanomodified laminates are investigated. Nanomodified laminates are fabricated by interleaving an electrospun nanofibrous mats in laminate mid-plane. Double Cantilever Beam (DCB) and End Notched Flexure (ENF) tests are performed on both virgin and nanomodified configuration. Results show that electrospun nanofibrous mat is able to increase by 23.2% the mechanical energy absorbing capability and by about 5% the G(IC).. ENF tests reveal that the nanofibrous mats contribute to improve the maximum stress before the material crisis (6.5% of increment) and a measurable increment of (8.1%) the maximum mechanical energy that can be absorbed by the material during the crack propagation is registered. The acoustic emission (AE) technique is used to monitor both DCB and ENF tests. The AE information highlight that the nanofibrous mats mitigate the interlaminar matrix failure on both the fracture modes. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：571 / 579

页数：9

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