0
Research Papers: Design and Analysis

Three-Dimensional Stress State Around Corrosive Cavities on Pressure Vessels

[+] Author and Article Information
Z. Abdulaliyev, E. S. Kayali

Department of Metallurgical and Materials Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey

S. Ataoglu, O. Bulut

Department of Civil Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey

J. Pressure Vessel Technol 132(2), 021204 (Feb 03, 2010) (6 pages) doi:10.1115/1.4000508 History: Received August 28, 2009; Revised October 08, 2009; Published February 03, 2010; Online February 03, 2010

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.

FIGURES IN THIS ARTICLE
<>
Copyright © 2010 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

(a) Locations of the cavities in the model. (b) Experimental set-up of the loading.

Grahic Jump Location
Figure 2

Isochromatic fringes from the slices around the cavity (Table 1), where α denotes the position of the cavity according to perpendicular axis to the model’s loading direction

Grahic Jump Location
Figure 3

Variation of dimensionless stress (σθ/p) around the ellipsoidal cavity region for uniaxial loading versus angle (α)

Grahic Jump Location
Figure 4

Variation in maximum dimensionless stress (σθ/p)max versus angle (α) for uniaxial loading

Grahic Jump Location
Figure 5

Dimensionless stress distribution (σθ/p) around the cavity region of type of (1.a) in Table 1 for uniaxial loading

Grahic Jump Location
Figure 6

Dimensionless stress distribution (σθ/p) around the cavity region of type of (4) in Table 1 for uniaxial loading

Grahic Jump Location
Figure 7

Dimensionless stress distribution (σθ/p) around the cavity region of type of (5) in Table 1 for uniaxial loading

Grahic Jump Location
Figure 8

Displacements of the points A and B on the cavity contour

Grahic Jump Location
Figure 9

Variation in angle β versus the radius of mating profiles ρ

Grahic Jump Location
Figure 10

Variation in dimensionless stress (σθ/p) versus angle (α) around type of ellipsoidal cavity region for biaxial loading: (a) horizontal or vertical positions of the cavity; (b) cavity position is α=45 deg

Grahic Jump Location
Figure 11

Variation in circumferential stress concentration versus obtuse angle between axis of the vessel and tangent to the profile of the cavity

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In