Full Content is available to subscribers

Subscribe/Learn More  >

Computational Assessment of Remaining Load Carrying Capacity of Pipes With Areal Surface Defects

[+] Author Affiliations
Miroslav Španiel, Ctirad Novotný, Milan Růžička

Czech Technical University in Prague, Prague, Czech Republic

Jaroslav Petroš, Romana Pavelková

RWE Transgas Net, s.r.o., Prague, Czech Republic

Paper No. PVP2009-77947, pp. 315-321; 7 pages
  • ASME 2009 Pressure Vessels and Piping Conference
  • Volume 2: Computer Applications/Technology and Bolted Joints
  • Prague, Czech Republic, July 26–30, 2009
  • Conference Sponsors: Pressure Vessels and Piping
  • ISBN: 978-0-7918-4365-9 | eISBN: 978-0-7918-3854-9
  • Copyright © 2009 by ASME


This paper reports on two criteria for burst pressure prediction of pipe with the areal surface defect. The criteria deal with not circumferential defects in internally pressured pipes without significant global bending loads. On the basis of the experimental analysis relatively simple methodologies of prediction were designed. They are based on finite element (FE) analysis and representing transition between analytical approaches and full failure simulations employing material failure models. Concept of presented methodologies is based on similarity of stress, strain and material state when plastic collapse starts in the defect domain. The similarity is expressed in terms of simple one-parametric criteria: (i) geometry and topology of the domain at which the plastic state of material is reached, (ii) amount of specific energy dissipated by plastic deformation in the regions, where the ratio of energy dissipated by plastic deformation compared to elastic stress energy is too high. Calibration of these methodologies is based on burst tests of DN800 pipes made of X60 steel with artificial defects. The ranges of defects dimensions are: longitudinal from 120 mm to 340 mm; circumferential from 60 mm to 180 mm; remaining thickness from 2.7 mm to 6.1 mm.

Copyright © 2009 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

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.

Related eBook Content
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