Monitoring and characterization of the interfacial fracture in sandwich composites with embedded multiplexed optical sensors

被引：21

作者：

Farmand-Ashtiani, E. ^{[1
]}

Cugnoni, J. ^{[1
]}

Botsis, J. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, LMAF STI, CH-1015 Lausanne, Switzerland

来源：

COMPOSITE STRUCTURES | 2013年 / 96卷

基金：

瑞士国家科学基金会;

关键词：

Sandwich structure; Multiplexed FBG sensor; Interfacial crack; Debonding monitoring; Fatigue; CORE; SPECIMEN; ADHESION;

D O I：

10.1016/j.compstruct.2012.08.059

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Interfacial debonding is one of the most critical damage modes that threatens the structural performance of sandwich composites. In this work, integrated multiplexed fiber Bragg grating (FBG) sensors of 1 mm gauge length are used for detection and characterization of crack propagation along the face-core interface. Single cantilever beam specimens incorporating arrays of FBG sensors are subjected to monotonic and fatigue debonding tests. The experimental configurations are simulated by finite element method in order to verify the experimental procedures and analyze the strain data corresponding to the location of the embedded FBGs. It is demonstrated that the embedded FBGs can successfully reveal the strain field imposed by the interface crack into the sandwich face. The good agreement between the experimental results and concurrent numerical simulations suggests that such data can be used for monitoring of interfacial fatigue and fracture in sandwich structures. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：476 / 483

页数：8

共 20 条

[1]

[Anonymous], 2007, STANDARD TEST METHOD

[2] Analysis of the sandwich DCB specimen for debond characterization [J].

Aviles, F. ;

Carlsson, L. A. .

ENGINEERING FRACTURE MECHANICS, 2008, 75 (02) :153-168

[3]

Bing QD, 2009, MAJOR ACCOMPLISHMENTS IN COMPOSITE MATERIALS AND SANDWICH STRUCTURES: AN ANTHOLOGY ONR SPONSORED RESEARCH, P365, DOI 10.1007/978-90-481-3141-9_14

[4]

Bogdanovich A.E., 1996, Mechanics of Textile and Laminated Composites with Application to Structural Analysis

[5]

Bosia F, 2004, COMPOS SCI TECHNOL, V64, P71, DOI [10.1016/S0266-3538(03)00201-X, 10.1016/S0566-3538(03)00201-X]

[6] A TEST TECHNIQUE FOR ASSESSING CORE SKIN ADHESION IN COMPOSITE SANDWICH STRUCTURES [J].

CANTWELL, WJ ;

DAVIES, P .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1994, 13 (03) :203-205

[7] A study of skin-core adhesion in glass fibre reinforced sandwich materials [J].

Cantwell, WJ ;

Davies, P .

APPLIED COMPOSITE MATERIALS, 1996, 3 (06) :407-420

[8]

Carlsson LA, 2011, SOLID MECH APPL, V121, P1, DOI 10.1007/978-1-4020-3225-7

[9]

Hutchinson J., 1992, Mixed Mode Cracking in Layered Materials

[10]

Li X., 1999, Journal of Sandwich Structures and Materials, V1, P60, DOI DOI 10.1177/109963629900100104

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