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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
212 Forensic Engineering Fundamentals
criterion (HIC). e curve in Figure 7.14 has been approximately tted by the equation by
Versace (1971):
HIC =−
()
()
()()
.
tt
tt
atdt
t
t
21
21
25
1
1
2
(7.44)
where a(t) is the acceleration at each increment of time in g units (32.2 /s
2
). e level of
concussion is when the HIC number equals or exceeds 700. Evaluating the integral
1
2
21
21
1
2
tt
atdt
a
tt
t
t
=−
()()
()
(7.45)
where a is now the maximum value. We may express the ratio of two HIC numbers
given that
a
v
tt
=
()
21
(7.46)
as represented in Equation 7.47:
HIC
HIC
11
22
25
=
v
v
.
(7.47)
Nahum et al. (1977) in their experiments on cadavers obtained pressure versus ...
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Publisher Resources

ISBN: 9781439878392