Fatigue crack shape prediction based on the stress singularity exponent

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F12%3A00385372" target="_blank" >RIV/68081723:_____/12:00385372 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26210/12:PU94941

Výsledek na webu

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.488-489.178" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.488-489.178</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.488-489.178" target="_blank" >10.4028/www.scientific.net/KEM.488-489.178</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fatigue crack shape prediction based on the stress singularity exponent

Popis výsledku v původním jazyce

In many industrial applications it is necessary to predict fatigue lifetime of the structures where the stress field near the crack front have a three-dimensional nature. Due to the existence of vertex singularity in the point where the crack front touches free surface, crack propagation in 3D structures cannot be reduced to a series of plane strain or plane stress problems along the crack front. The paper describes the influence of the vertex singularity on crack shape for threedimensional structure. The iterative process for estimation of a real crack front based on a stress singularity exponent is presented. In each node defining the crack front the stress singularity exponent has been estimated and complete crack front shape corresponding to the constant stress singularity exponent was found. The methodology presented can help to estimate crack front shape in a linear elastic fracture mechanics framework and estimate fracture parameters of fatigue cracks more accurately.

Název v anglickém jazyce

Fatigue crack shape prediction based on the stress singularity exponent

Popis výsledku anglicky

In many industrial applications it is necessary to predict fatigue lifetime of the structures where the stress field near the crack front have a three-dimensional nature. Due to the existence of vertex singularity in the point where the crack front touches free surface, crack propagation in 3D structures cannot be reduced to a series of plane strain or plane stress problems along the crack front. The paper describes the influence of the vertex singularity on crack shape for threedimensional structure. The iterative process for estimation of a real crack front based on a stress singularity exponent is presented. In each node defining the crack front the stress singularity exponent has been estimated and complete crack front shape corresponding to the constant stress singularity exponent was found. The methodology presented can help to estimate crack front shape in a linear elastic fracture mechanics framework and estimate fracture parameters of fatigue cracks more accurately.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

—

Projekt

<a href="/cs/project/GA101%2F09%2F0867" target="_blank" >GA101/09/0867: Odhad únavového poškození tenkostěnných struktur</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Key Engineering Materials

ISSN

1013-9826

e-ISSN

—

Svazek periodika

488-489

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

4

Strana od-do

178-181

Kód UT WoS článku

000306531200044

EID výsledku v databázi Scopus

—