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Unformatted text preview: .e., Af Ac V solubility V , the previous equathe corresponding volumeand hence completef and Am Ac atm every
at lower frequencies.
tion can be rewritten as:
machining A process by which excess material is
isostrain fAn assumption in the analysis of composites
removed by plastic shearing.
in which the interface is the matrix are considered to be
If we assumethe ﬁber and “perfect” in that no sliding occurs between the ﬁber and
magnetic domains Microscopic regions of a ferri- o
matrix, then to identical strain levels. It is the result of a
ferromagnetic crystal in which all of the internal magn
load being applied parallel to the ﬁbers.
dipoles are aligned with one another.
where c , f , andAn are the strains inin the analysis of and matrix. Equation 14.5–7,
m assumption the composite, ﬁber, composites
known as the isostrain and the matrix are considered valid when the loading
magnetic ﬁeld strength H A measure of the intensi
in which the ﬁber condition, is usually assumed to be to be
of the external magnetic ﬁeld.
subjected to identical stress. It is the result of a load
being applied perpendicular to the ﬁbers.
magnetic induction B A measure of the degree of
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magnetism resulting from a given external magnetic ﬁe
isotactic Conﬁguration of a vinyl polymer established
during polymerization corresponding to all side groups
positioned on the same side of the backbone.
The constant of proporisotropic Characterized by properties that are
tionality that relates the magnetization M to the magne
independent of the direction in which they are measured.
ﬁeld strength H. 598 EXAMPLE 14.5–1
Estimate the elastic modulus of a uniaxial epoxy-glass ﬁber composite in the longitudinal and
transverse directions given the following data: Em 3.0 GPa, Ef 70 GPa, and Vf 0.60. Compare your result with the data in Figure 14.5–4.
From Equation 14.5–9, the longitudinal elastic modulus is given by:
Ecl 70 GPa 0.6 3 GPa 0.4 43.2 GPa From Equation 14.5–13, the transverse modulus is given by:
70 GPa 0.4
3 GPa or Ect 7.05 GPa ....................................................................................................................................... | v v pg598 [V] G2 crystal An
invariant reaction A reaction is which there are zero liquidphases present. anisotropic ﬂuid
ionic bond A type of primary bond involving
solution characterized by molecular a
degrees of freedom.
line compound A compoun
7-27060 / IRWIN / Schaffer
iq 13.01.98 plm QC2 rps MP
electronegative and electropositive atoms that display a
liquidindependent of temperature. de
metal embrittlement A
ion implantation A process in which values
signiﬁcant difference in their electronegativityions of light
in which a liquid metal preferentially
(usually EN such.7). boron and nitrogen are made to impinge boundaries indensity The number
on the surface of the wor...
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