Effect of interphase on fibre-bridging toughness of a unidirectional FRP composite thin plate

Z. Jack Wu; J. M. Davies

doi:10.1016/j.compstruct.2004.08.008

Effect of interphase on fibre-bridging toughness of a unidirectional FRP composite thin plate

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Abstract

A parametric analysis of the toughening mechanisms in a uniaxially fibre reinforced polymer (FRP) thin plate with a power-law hardening shear interphase is presented. An interfacial shear-lag model is used to analyse the relationship between the crack surface traction exerted by the intact fibres and the crack opening displacement (COD). Numerical solutions of the equations governing bridge-toughening are given. Two special kinds of interphase, i.e. linearly elastic and perfect plastic, are discussed. The results demonstrate that the toughening ratio of the composite thin plate is sensitive to several parameters, e.g. the thickness of the interphase between fibre and matrix, the hardening parameter of the interphase, the interfacial shear properties (stiffness and strength), the fibre radius and the far-field load. The results of this investigation will be beneficial to the selection of constitutive materials, the improvement of mechanical behaviour and the fabrication process of FRP composites. © 2004 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	510-515
Number of pages	5
Journal	Composite Structures
Volume	69
Issue number	4
DOIs	https://doi.org/10.1016/j.compstruct.2004.08.008
Publication status	Published - Aug 2005

Keywords

Fibre-bridging
FRP composites
Interphase
Toughness

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10.1016/j.compstruct.2004.08.008

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title = "Effect of interphase on fibre-bridging toughness of a unidirectional FRP composite thin plate",

abstract = "A parametric analysis of the toughening mechanisms in a uniaxially fibre reinforced polymer (FRP) thin plate with a power-law hardening shear interphase is presented. An interfacial shear-lag model is used to analyse the relationship between the crack surface traction exerted by the intact fibres and the crack opening displacement (COD). Numerical solutions of the equations governing bridge-toughening are given. Two special kinds of interphase, i.e. linearly elastic and perfect plastic, are discussed. The results demonstrate that the toughening ratio of the composite thin plate is sensitive to several parameters, e.g. the thickness of the interphase between fibre and matrix, the hardening parameter of the interphase, the interfacial shear properties (stiffness and strength), the fibre radius and the far-field load. The results of this investigation will be beneficial to the selection of constitutive materials, the improvement of mechanical behaviour and the fabrication process of FRP composites. {\textcopyright} 2004 Elsevier Ltd. All rights reserved.",

keywords = "Fibre-bridging, FRP composites, Interphase, Toughness",

author = "Wu, \{Z. Jack\} and Davies, \{J. M.\}",

year = "2005",

month = aug,

doi = "10.1016/j.compstruct.2004.08.008",

language = "English",

volume = "69",

pages = "510--515",

journal = "Composite Structures",

issn = "0263-8223",

publisher = "Elsevier BV",

number = "4",

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TY - JOUR

T1 - Effect of interphase on fibre-bridging toughness of a unidirectional FRP composite thin plate

AU - Wu, Z. Jack

AU - Davies, J. M.

PY - 2005/8

Y1 - 2005/8

N2 - A parametric analysis of the toughening mechanisms in a uniaxially fibre reinforced polymer (FRP) thin plate with a power-law hardening shear interphase is presented. An interfacial shear-lag model is used to analyse the relationship between the crack surface traction exerted by the intact fibres and the crack opening displacement (COD). Numerical solutions of the equations governing bridge-toughening are given. Two special kinds of interphase, i.e. linearly elastic and perfect plastic, are discussed. The results demonstrate that the toughening ratio of the composite thin plate is sensitive to several parameters, e.g. the thickness of the interphase between fibre and matrix, the hardening parameter of the interphase, the interfacial shear properties (stiffness and strength), the fibre radius and the far-field load. The results of this investigation will be beneficial to the selection of constitutive materials, the improvement of mechanical behaviour and the fabrication process of FRP composites. © 2004 Elsevier Ltd. All rights reserved.

AB - A parametric analysis of the toughening mechanisms in a uniaxially fibre reinforced polymer (FRP) thin plate with a power-law hardening shear interphase is presented. An interfacial shear-lag model is used to analyse the relationship between the crack surface traction exerted by the intact fibres and the crack opening displacement (COD). Numerical solutions of the equations governing bridge-toughening are given. Two special kinds of interphase, i.e. linearly elastic and perfect plastic, are discussed. The results demonstrate that the toughening ratio of the composite thin plate is sensitive to several parameters, e.g. the thickness of the interphase between fibre and matrix, the hardening parameter of the interphase, the interfacial shear properties (stiffness and strength), the fibre radius and the far-field load. The results of this investigation will be beneficial to the selection of constitutive materials, the improvement of mechanical behaviour and the fabrication process of FRP composites. © 2004 Elsevier Ltd. All rights reserved.

KW - Fibre-bridging

KW - FRP composites

KW - Interphase

KW - Toughness

U2 - 10.1016/j.compstruct.2004.08.008

DO - 10.1016/j.compstruct.2004.08.008

M3 - Article

SN - 0263-8223

VL - 69

SP - 510

EP - 515

JO - Composite Structures

JF - Composite Structures

IS - 4

ER -

Effect of interphase on fibre-bridging toughness of a unidirectional FRP composite thin plate

Abstract

Keywords

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