60° boron/epoxy lamina. Use the properties of unidirectional boron/epoxy lamina from below table. What is the Poisson's ratio, vxy?
60° boron/epoxy lamina. Use the properties of unidirectional boron/epoxy lamina from below table. What is the Poisson's ratio, vxy?
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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60° boron/epoxy lamina. Use the properties of unidirectional boron/epoxy lamina from below table.
What is the Poisson's ratio, vxy?
Transcribed Image Text:TABLE 2.2
Typical Mechanical Properties of a Unidirectional Lamina (USCS System of Units)
Boron/
Graphite/
epoxy
epoxy
Property
Fiber volume fraction
Longitudinal elastic
modulus
Transverse elastic modulus
Major Poisson's ratio
Shear modulus
Ultimate longitudinal
tensile strength
Ultimate longitudinal
compressive strength
Ultimate transverse tensile
strength
Ultimate transverse
compressive strength
Ultimate in-plane shear
strength
Longitudinal coefficient of
thermal expansion
Transverse coefficient of
thermal expansion
Longitudinal coefficient of
moisture expansion
Transverse coefficient of
moisture expansion
Symbol
Vf
E₁
E₂
V12
G12
(1) ult
(of) ult
(62) alt
(02) ult
(T12) ult
α
0₂
B₁
B₂
Msi
Msi
Msi
ksi
ksi
ksi
Units
ksi
ksi
uin./in./°F
uin./in./°F
in./in./lb/lb
in./in./lb/lb
Glass/
epoxy
0.45
5.60
1.20
0.26
0.60
154.03
88.47
4.496
17.12
10.44
4.778
12.278
0.00
0.60
0.50
29.59
2.683
0.23
0.811
182.75
362.6
8.847
29.30
9.718
3.389
16.83
0.00
0.60
0.70
26.25
1.49
0.28
1.040
217.56
217.56
5.802
35.68
9.863
0.0111
12.5
0.00
0.60
Source: Tsai, S.W. and Hahn, H.T., Introduction to Composite Materials, CRC Press, Boca Raton,
FL, Table 1.7, p. 19; Table 7.1, p. 292; Table 8.3, p. 342. USCS system used for tables reprinted
with permission.
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