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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
47Structural Distress
Summing forces along the x-axis provides the following:
σ
σπ π
σ
2
2
2
2
0
20
2
dA pdA
rt pr
pr
t
−=
−=
=
()()
(2.91)
Relating the results from Equations 2.90 and 2.91,
σσ
12
2=
(2.92)
In other words, given an internal pressure acting on the walls of a cylindrical vessel, the
hoop stress will be twice as large as the longitudinal stress.
Modes of Failure
As shown in Equations 2.91 and 2.92, increased pressure inside a vessel will increase
the stresses tangent to the surface. These stresses can increase to the point of fail-
ure. Acommon type of failure to thin-walled pipes is caused by freezing water. Water
expands volumetrically as it freeze ...
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Publisher Resources

ISBN: 9781439878392