Large plastic zones and extensive influence of notch under near-threshold mode II and mode III loading of fatigue cracks

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F18%3APU130221" target="_blank" >RIV/00216305:26620/18:PU130221 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.prostr.2018.12.235" target="_blank" >http://dx.doi.org/10.1016/j.prostr.2018.12.235</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2018.12.235" target="_blank" >10.1016/j.prostr.2018.12.235</a>

Result language

angličtina

Original language name

Large plastic zones and extensive influence of notch under near-threshold mode II and mode III loading of fatigue cracks

Original language description

Plastic zone shapes and sizes were determined for a cylindrical specimen for mode II and mode III crack testing made of ARMCO iron. Three methods of calculation were applied: Irwins approximate solution, HRR field and finite element method. The plastic zones were found to be very large under mode II and mode III loading even at the loading level corresponding to fatigue crack growth threshold. The difference between sizes of plastic zones under tensile-mode and shear-mode loading was explained by different stress gradients and corresponding stress concentration factors of notches under shear and tensile type loading. This is also the reason for a much further influence of notch on stress intensity factors for mode II and mode III cracks emanating from the notch than the influence under mode I loading. Preliminary results for reversed plastic zone size indicated that it is smaller than the theoretical size of 1/4 of the monotonic zone which explained the presence of large monotonic zone at threshold loading.

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

<a href="/en/project/GJ17-15716Y" target="_blank" >GJ17-15716Y: Intrinsic resistance to shear-mode fatigue crack growth in metallic materials</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Procedia Structural Integrity

ISSN

2452-3216

e-ISSN

—

Volume of the periodical

13

Issue of the periodical within the volume

special

Country of publishing house

IT - ITALY

Number of pages

6

Pages from-to

1123-1128

UT code for WoS article

000459860900185

EID of the result in the Scopus database

2-s2.0-85064599069