Role of fibre–matrix interface and fibre direction on dielectric behaviour of epoxy composites

Two methods have been used to evaluate the transverse stresses when an aligned fibre composite is stressed in the fibre direction. A single fibre model is shown to overestimate the stresses at the fibre-matrix interface by about 20 per cent compared with a finite element solution for an infinite array of fibres. Using relatively few fibres in the finite element analysis, however, only gives very approximate stress distributions. With fibre volume fractions in the range 0-0.50 the average radial stresses across the fibre-matrix interface are always compressive, and can be represented by a relatively simple formula with an accuracy which is normally with in a few percent of the finite element value.

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Role of Silk Fiber Loading on Physico-Mechanical Properties of Epoxy Composites

Journal of Natural Fibers ◽

10.1080/15440478.2021.1921654 ◽

2021 ◽

pp. 1-12

Author(s):

S. M. Darshan ◽

B. Suresha

Keyword(s):

Mechanical Properties ◽

Silk Fiber ◽

Epoxy Composites ◽

Fiber Loading

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Characterisation of the fibre/matrix interface in reinforced polymers by the push-in technique

Composites Science and Technology ◽

10.1016/s0266-3538(96)00159-5 ◽

1997 ◽

Vol 57 (8) ◽

pp. 845-851 ◽

Cited By ~ 30

Author(s):

Gerhard Kalinka ◽

André Leistner ◽

Andreas Hampe

Keyword(s):

Matrix Interface ◽

Reinforced Polymers ◽

Fibre Matrix

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Fibre-Matrix Interface Development during High Temperature Exposition of Long Fibre Reinforced SiOC Matrix

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.592-593.401 ◽

2013 ◽

Vol 592-593 ◽

pp. 401-404

Author(s):

Zdeněk Chlup ◽

Martin Černý ◽

Adam Strachota ◽

Martina Halasova ◽

Ivo Dlouhý

Keyword(s):

High Temperature ◽

Crack Formation ◽

Fracture Behaviour ◽

Point Of View ◽

Reinforced Composites ◽

Matrix Interface ◽

Significant Damage ◽

The Matrix ◽

Fibre Matrix ◽

Fibre Reinforced Composites

The fracture behaviour of long fibre reinforced composites is predetermined mainly by properties of fibre-matrix interface. The matrix prepared by pyrolysis of polysiloxane resin possesses ability to resist high temperatures without significant damage under oxidising atmosphere. The application is therefore limited by fibres and possible changes in the fibre matrix interface. The study of development of interface during high temperature exposition is the main aim of this contribution. Application of various techniques as FIB, GIS, TEM, XRD allowed to monitor microstructural changes in the interface of selected places without additional damage caused by preparation. Additionally, it was possible to obtain information about damage, the crack formation, caused by the heat treatment from the fracture mechanics point of view.

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