Plastic Collapse Stresses for Pipes With Inner and Outer Circumferential Cracks

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F19%3A10244424" target="_blank" >RIV/61989100:27690/19:10244424 - isvavai.cz</a>

Result on the web

<a href="https://asmedigitalcollection.asme.org/pressurevesseltech/article-abstract/141/2/021203/369257/Plastic-Collapse-Stresses-for-Pipes-With-Inner-and?redirectedFrom=fulltext" target="_blank" >https://asmedigitalcollection.asme.org/pressurevesseltech/article-abstract/141/2/021203/369257/Plastic-Collapse-Stresses-for-Pipes-With-Inner-and?redirectedFrom=fulltext</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/1.4042594" target="_blank" >10.1115/1.4042594</a>

Result language

angličtina

Original language name

Plastic Collapse Stresses for Pipes With Inner and Outer Circumferential Cracks

Original language description

Bending stresses at incipient plastic collapse for pipes with circumferential surface cracks are predicted by net-section stress approach. Appendix C-5320 of ASME B&amp;PV Code Section XI provides an equation of bending stress at the plastic collapse, where the equation is applicable for both inner and outer surface cracks. That is, the collapse stresses for pipes with inner and outer surface cracks are the same, because of the pipe mean radius at the cracked section being entirely the same. Authors considered the separated pipe mean radii at the cracked ligament and at the uncracked ligament. Based on the balances of axial force and bending moment, equations of plastic collapse stresses for both inner and outer cracked pipes were developed. It is found that, when the crack angle and depth are the same, the collapse stress for inner cracked pipe is slightly higher than that calculated by the Appendix C equation, and the collapse stress for outer cracked pipe is slightly lower than that by the Appendix C equation, as can be expected. The collapse stresses derived from the three equations are almost the same in most instances. However, for less common case where the crack angle and depth are very large for thick wall pipes, the differences among the three collapse stresses become large. Code users pay attention to the margins of plastic collapse stresses for outer cracked pipes, when using Appendix C equation.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/EF17_048%2F0007373" target="_blank" >EF17_048/0007373: Damage Prediction of Structural Materials</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Pressure Vessel Technology, Transactions of the ASME

ISSN

0094-9930

e-ISSN

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Volume of the periodical

141

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

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UT code for WoS article

000459971700004

EID of the result in the Scopus database

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