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A composite structure used for electrical cable ducting on an aircraft carrier is made by the pultrusion technique. The pultrusion consists of 60% S2-glass fibres by volume (V₁ = 0.6). 60% of the fibres are in unidirectional (0°) form and the other 40% consists of a woven fabric. The matrix is a phenolic resin modified with polyvinylbutyral (PVB). The properties of the constituent materials are: Tensile modulus of fibres, Ef = 86GPa Tensile strength of fibres, Of = 4700MPa Tensile modulus of matrix, Em = 4GPa Tensile strength of matrix, Om = 70MPa Calculate the tensile modulus and strength of the pultrusion in the 0° and 90° directions using the simple 'rule of mixtures' approach.

A composite structure used for electrical cable ducting on an aircraft carrier is made by the pultrusion technique. The pultrusion consists of 60% S2-glass fibres by volume (V₁ = 0.6). 60% of the fibres are in unidirectional (0°) form and the other 40% consists of a woven fabric. The matrix is a phenolic resin modified with polyvinylbutyral (PVB). The properties of the constituent materials are: Tensile modulus of fibres, Ef = 86GPa Tensile strength of fibres, Of = 4700MPa Tensile modulus of matrix, Em = 4GPa Tensile strength of matrix, Om = 70MPa Calculate the tensile modulus and strength of the pultrusion in the 0° and 90° directions using the simple 'rule of mixtures' approach.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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a) A composite structure used for electrical cable ducting on an aircraft carrier is made by the pultrusion technique. The pultrusion consists of 60% S2-glass fibres by volume (V₁ = 0.6). 60% of the fibres are in unidirectional (0°) form and the other 40% consists of a woven fabric. The matrix is a phenolic resin modified with polyvinylbutyral (PVB). The properties of the constituent materials are: i. Tensile modulus of fibres, Ef = 86GPa Tensile strength of fibres, of = 4700MPa Tensile modulus of matrix, Em = 4GPa Tensile strength of matrix, Om = 70MPa Calculate the tensile modulus and strength of the pultrusion in the 0° and 90° directions using the simple 'rule of mixtures' approach.
Transcribed Image Text:a) A composite structure used for electrical cable ducting on an aircraft carrier is made by the pultrusion technique. The pultrusion consists of 60% S2-glass fibres by volume (V₁ = 0.6). 60% of the fibres are in unidirectional (0°) form and the other 40% consists of a woven fabric. The matrix is a phenolic resin modified with polyvinylbutyral (PVB). The properties of the constituent materials are: i. Tensile modulus of fibres, Ef = 86GPa Tensile strength of fibres, of = 4700MPa Tensile modulus of matrix, Em = 4GPa Tensile strength of matrix, Om = 70MPa Calculate the tensile modulus and strength of the pultrusion in the 0° and 90° directions using the simple 'rule of mixtures' approach.
a) i. iny Pultrusion V₁ = 0.6 Vm = (1 -Vf) = 0.4 Vfo (0.6 x 0.6) + (0.5 x 0.4 x 0.6) = 0.48 Vf90 = V₁ - Vfo = 0.6 -0.48 = 0.12
Transcribed Image Text:a) i. iny Pultrusion V₁ = 0.6 Vm = (1 -Vf) = 0.4 Vfo (0.6 x 0.6) + (0.5 x 0.4 x 0.6) = 0.48 Vf90 = V₁ - Vfo = 0.6 -0.48 = 0.12
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