Reference curve of fatigue crack growth for ferritic steels under negative r ratio provided by ASME code section XI

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F17%3A10238666" target="_blank" >RIV/61989100:27690/17:10238666 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1115/1.4034586" target="_blank" >http://dx.doi.org/10.1115/1.4034586</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/1.4034586" target="_blank" >10.1115/1.4034586</a>

Result language

angličtina

Original language name

Reference curve of fatigue crack growth for ferritic steels under negative r ratio provided by ASME code section XI

Original language description

Reference curves of fatigue crack growth rates for ferritic steels in air environment are provided by the ASME Code Section XI Appendix A. The fatigue crack growth rates under negative R ratio are given as da/dN versus Kmax. It is generally well known that the growth rates decreases with decreasing R ratios. However, the da/dN as a function of Kmax are the same curves under R = 0, −1, and −2. In addition, the da/dN increases with decreasing R ratio for R &lt; −2. This paper converts from da/dN versus Kmax to da/dN versus ΔKI, using crack closure U. It can be obtained that the growth rates da/dN as a function of ΔKI decrease with decreasing R ratio for −2 ≤ R &lt; 0. It can be seen that the growth rate da/dN versus ΔKI is better equation than da/dN versus Kmax from the view point of stress ratio R. Furthermore, extending crack closure U to R = −5, it can be explained that the da/dN decreases with decreasing R ratio in the range of −5 ≤ R &lt; 0. This tendency is consistent with the experimental data.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

—

OECD FORD branch

20301 - Mechanical engineering

Project

—

Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2017

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

volume 741

Issue of the periodical within the volume

PVT-16-1059

Country of publishing house

US - UNITED STATES

Number of pages

5

Pages from-to

"Termín neuveden"

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-84993990145