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Forensic Engineering Fundamentals
book

Forensic Engineering Fundamentals

by Harold Franck, Darren Franck
December 2012
Beginner to intermediate content levelBeginner to intermediate
487 pages
17h
English
CRC Press
Content preview from Forensic Engineering Fundamentals
330 Forensic Engineering Fundamentals
For a solid conductor, D = 0. So i
z
= CI
o
(ν) and external radii = a. Applying boundary con-
ditions at
ρ = 0, B = 0,
(),|∇× =
==
i
i
z
ρρ
δ
δρ
00
0
(10.51)
at
ρ
ρ
==
=
ai i
za
,|
0
iCIv C
i
Iv
oo
o
oa
=⇒=
=
()
()|
ρ
(10.52)
then
i
Iv
Iv
Ijp
Ijpa
i
z
oi
oa
o
o
o
o
==
()|
()|
[(
)]
[(
)]
1
2
1
2
ρ
(10.53)
For numerical computation, since I
o
is complex, it must be broken down into its real and
imaginary parts, so for argument x,
Ijxber xjbe
ix
ooo
[( )] ()
()
1
2
=+
(10.54)
Using ber and bei functions and multiplying by e
jωt
and taking the real part, the current
density in a solid wire of radius “a” and i
Β
= 1 is
i
berp beip
berpabei p
z
oo
oo
=
+
+
22
22
1
2
1
2
1
2
1
2
1
2
() ()
()
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Publisher Resources

ISBN: 9781439878392