A composite material consists of 60% glass fibre by volume (V₁ = 0.6). Half of the fibre is in unidirectional (0°) roving form and the other half is continuous fibre (0°, 90°) mat. The matrix is polyester. The properties of the constituent materials are shown in Table 4. Table 4 Density (Mg.m³) Tensile modulus (GPa) Tensile strength (MPa) Fibre 2.6 69 1200 i. Calculate the density of the composite material Matrix 1.1 2 35 ii. Calculate the tensile strength, oc, and the tensile modulus, Ec, of the composite in the 0° and 90° directions using the simple "rule of mixtures" approach.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A composite material consists of 60% glass fibre by volume (V₁ = 0.6). Half
of the fibre is in unidirectional (0°) roving form and the other half is
continuous fibre (0°, 90°) mat. The matrix is polyester. The properties of
the constituent materials are shown in Table 4.
Table 4
Density (Mg.m³)
Tensile modulus (GPa)
Tensile strength (MPa)
Fibre
2.6
69
1200
i. Calculate the density of the composite material
Matrix
1.1
2
35
ii. Calculate the tensile strength, oc, and the tensile modulus, Ec,
of the composite in the 0° and 90° directions using the simple
"rule of mixtures" approach.
Transcribed Image Text:A composite material consists of 60% glass fibre by volume (V₁ = 0.6). Half of the fibre is in unidirectional (0°) roving form and the other half is continuous fibre (0°, 90°) mat. The matrix is polyester. The properties of the constituent materials are shown in Table 4. Table 4 Density (Mg.m³) Tensile modulus (GPa) Tensile strength (MPa) Fibre 2.6 69 1200 i. Calculate the density of the composite material Matrix 1.1 2 35 ii. Calculate the tensile strength, oc, and the tensile modulus, Ec, of the composite in the 0° and 90° directions using the simple "rule of mixtures" approach.
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