Stress Intensity Factors for Transformed Surface Flaws and Remaining Fatigue Lives Based on Flaw-to-Surface Proximity Rules

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F18%3A10241830" target="_blank" >RIV/61989100:27690/18:10241830 - isvavai.cz</a>

Result on the web

<a href="http://pressurevesseltech.asmedigitalcollection.asme.org/article.aspx?articleid=2686583" target="_blank" >http://pressurevesseltech.asmedigitalcollection.asme.org/article.aspx?articleid=2686583</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/1.4040640" target="_blank" >10.1115/1.4040640</a>

Result language

angličtina

Original language name

Stress Intensity Factors for Transformed Surface Flaws and Remaining Fatigue Lives Based on Flaw-to-Surface Proximity Rules

Original language description

Subsurface flaws are sometimes found as blowholes near free surfaces of structural components. Net-section stress at the ligament between the free component surface and the subsurface flaw increases when the ligament size is short. It can be easily expected that the stress intensity factor at the tip of the subsurface flaw increases with decreasing the ligament size. Fitness-for-service (FFS) codes provide flaw-to-surface proximity rules, which are transformation from subsurface to surface flaw. Although the concepts of the proximity rules of the FFS codes are the same, the specific criteria for the rules on transforming subsurface flaws to surface flaws are significantly different among FFS codes. This study demonstrates the proximity criteria provided by the FFS codes and indicates that the increment of the stress intensity factors before and after the transformation depends on the flaw aspect ratio and the ligament size at the transformation from subsurface to surface flaws. In addition, it is shown that remaining fatigue lives for pipes with flaws are strongly affected by the ligament size at the transformation from subsurface to surface flaws.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

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

—

Volume of the periodical

140

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

—

UT code for WoS article

000447205000008

EID of the result in the Scopus database

—