Improvement of the Asme B&pv Code Resolution ofNonplanar Flaws in Pressure Retaining Components .
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F22%3A10250515" target="_blank" >RIV/61989100:27690/22:10250515 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Improvement of the Asme B&pv Code Resolution ofNonplanar Flaws in Pressure Retaining Components .
Original language description
When nonplanar flaws are detected in a component they are subjected not only to fracture mode I but to fracture modes I, II and III according to the direction of the load relatively to that of the flaws. Those fracture modes are induced by the relative displacement of crack faces as they are subjected to multi-axial loading. Consequently, the Stress Intensity Factors (SIFs) KI, KII and KIII corresponding to each of those modes should be accounted for in the flaw assessment. This is done in some Fitness-for-Service Codes that make provision to calculate an effective SIF.In the ASME B&PV Code Section XI, a simplified approach is proposed: a nonplanar flaw is resolved into two planar flaws by projection of the flaw area into the planes normal to the maximum principal stresses. This approach allows simplifying the flaw assessment procedure as it deals only with KI SIF for which a lot of tabulated or closed-form solutions exist. However, the authors of this paper demonstrated recently that this simplified resolution of nonplanar flaws is not conservative for all types of loading and flaw inclinations. Consequently, an improvement of the resolution of nonplanar flaws must be provided in ASME B&PV Code Section XI. In that frame, this paper carries out an exhaustive assessment of the conservatism of the ASME approach and then proposes an alternative approach to deal with nonplanar flaws allowing to overcome the non-suitability of the current ASME Code.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Volume 1, 2022
ISBN
978-0-7918-8614-4
ISSN
0277-027X
e-ISSN
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Number of pages
7
Pages from-to
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Publisher name
American Society of Mechanical Engineers
Place of publication
New York
Event location
Las Vegas
Event date
Jul 17, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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