Internal surfaces of pressure vessels used in many industrial sectors are subjected to corrosive effects leading to cavities. In this study, corrosive cavities on investigated pressure vessels are classified according to their shapes and dimensions. Distribution of stress was experimentally investigated around regions of different types of cavities using three-dimensional photoelastic models. An empirical expression is proposed to determine where maximum stress occurs in type of ellipsoidal cavity in the case of uniaxial loading. The obtained results show quite high stress levels around the cavity regions in pressure vessels, which increase the risk of crack formation.

1.
Fang
,
J.
,
Li
,
N.
,
Sang
,
Z. F.
, and
Widera
,
G. E. O.
, 2009, “
Study of Elastic Strength for Cylinders With Hillside Nozzle
,”
ASME J. Pressure Vessel Technol.
0094-9930,
131
(
5
), p.
051202
.
2.
Avrithi
,
K.
, and
Ayyub
,
B. M.
, 2009, “
A Reliability-Based Approach for the Design of Nuclear Piping for Internal Pressure
,”
ASME J. Pressure Vessel Technol.
0094-9930,
131
(
4
), p.
041201
.
3.
Gao
,
P.
,
Li
,
N.
,
Sang
,
Z. F.
, and
Widera
,
G. E. O.
, 2009, “
Elastic Behavior of Cylindrical Vessels With Lateral Nozzle Under Internal Pressure
,”
ASME J. Pressure Vessel Technol.
0094-9930,
131
(
5
), p.
051207
.
4.
Liebowitz
,
H.
, 1969,
Fracture: An Advanced Treatise, Vol. IV, Engineering Fracture Design
,
Academic
,
New York
.
5.
Peterson
,
R. E.
, 1974,
Stress Concentration Factors
,
Wiley
,
New York
.
6.
Neuber
,
H.
, 1961,
Theory of Notch Stresses: Principles for Exact Stress Calculation
,
U.S. Department of Commerce, National Technical Information Service
,
Washington, DC
.
7.
Savin
,
G. N.
, 1961,
The Stress Distribution Around Holes
,
Pergamon
,
London
.
8.
Broberg
,
K. B.
, 1999,
Cracks and Fracture
,
Academic
,
San Diego, CA
.
9.
Cherepanov
,
G. P.
, 1979,
Mechanics of Brittle Fracture
,
McGraw-Hill
,
New York
.
10.
Frocht
,
M. M.
, 1947,
Photoelasticity
,
Wiley
,
New York
.
11.
Durelli
,
A. J.
, and
Riley
,
W. F.
, 1965,
Introduction to Photomechanics
,
Prentice-Hall
,
Englewood Cliffs, NJ
.
12.
Abdulaliyev
,
Z.
, and
Ataoglu
,
S.
, 2009, “
Effect of Poisson’s Ratio on Three-Dimensional Stress Distribution
,”
ASME J. Appl. Mech.
0021-8936,
76
(
1
), p.
014506
.
13.
Smirnov
,
V. I.
, 1964,
A Course of Higher Mathematics
, Vol.
I
,
Pergamon
,
London
, p.
346
.
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