ALLOWABLE STRESS AND ALLOWABLE FLAW SIZES ESTIMATED BY CONVERTED TENSILE PROPERTIES FROM HARDNESS FOR AUSTENITIC STAINLESS STEEL PIPE
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F24%3A10256711" target="_blank" >RIV/61989100:27360/24:10256711 - isvavai.cz</a>
Result on the web
<a href="https://asmedigitalcollection.asme.org/PVP/proceedings-abstract/PVP2024/88476/V001T01A071/1209310" target="_blank" >https://asmedigitalcollection.asme.org/PVP/proceedings-abstract/PVP2024/88476/V001T01A071/1209310</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1115/PVP2024-122432" target="_blank" >10.1115/PVP2024-122432</a>
Alternative languages
Result language
angličtina
Original language name
ALLOWABLE STRESS AND ALLOWABLE FLAW SIZES ESTIMATED BY CONVERTED TENSILE PROPERTIES FROM HARDNESS FOR AUSTENITIC STAINLESS STEEL PIPE
Original language description
If a flaw in a high-toughness ductile pipe of a power plant is detected during periodic in-service inspection, stress applied at the flaw location of the pipe is compared with an allowable stress. When the applied stress is less than the allowable stress, the plant can operate continuously for a certain evaluation period in accordance with ASME Code Section XI. The flow stress given by the average of yield strength and ultimate tensile strength is an important material parameter for allowable stress. Recently, many fitness-for-service codes and technical reports have adopted conversions from hardness measurement values to yield strength and ultimate tensile strength. In this paper, we introduced the flow stress obtained from converted tensile properties from Vickers hardness using the presented equations for austenitic stainless steel. The allowable stress and allowable crack depths (sizes) estimated by the Vickers hardness were compared with those determined by actual tensile properties. As a result, the flow stress converted from hardness was about 1.5 times larger than that obtained by actual flow stress. The allowable flaw sizes calculated by the flow stress converted from hardness gave an appropriate indication when the allowable or applied stress was very low. However, the flow stress converted from hardness gave unconservative allowable stress, when the applied stress was large. Since the results are based on one available hardness measurement, other hardness measurements should be necessary to confirm these preliminary conclusions.
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
20302 - Applied mechanics
Result continuities
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)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of ASME 2024 Pressure Vessels & Piping Conference, PVP2024. Volume 1. July 28-August 2, 2024 Bellevue, Washington
ISBN
978-0-7918-8847-6
ISSN
0277-027X
e-ISSN
0277-027X
Number of pages
6
Pages from-to
"V001T01A071"
Publisher name
American Society of Mechanical Engineers
Place of publication
New York
Event location
Bellevue
Event date
Jul 28, 2024
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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