Evaluation of overloading and crack closure effects on fatigue crack growth in an aircraft 7075-T7351 Al-alloy.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25797000%3A_____%2F14%3A%230000480" target="_blank" >RIV/25797000:_____/14:#0000480 - isvavai.cz</a>

Result on the web

<a href="http://www.scientific.net/KEM" target="_blank" >http://www.scientific.net/KEM</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.577-578.325" target="_blank" >10.4028/www.scientific.net/KEM.577-578.325</a>

Result language

angličtina

Original language name

Evaluation of overloading and crack closure effects on fatigue crack growth in an aircraft 7075-T7351 Al-alloy.

Original language description

An investigation of effects of overloads on fatigue crack growth (FCG) and retardation in Al 7075-T7351 alloy was carried out. FCG rates were measured at load asymmetry R = Fmin / F max = 0.1, in quite wide region of growth between 10-8 and 10-5 m/cycle(stress intensity factor range AK between 6 and 40 MPa m1/2). Retardation effects of overloads of the magnitudes 2.7-times and 3.0-times of the maximum load in the constant range fatigue loading were significant. Crack mouth opening displacement was evaluated at numerous stages of crack growth including pre-cracking with so called load shedding method. The overloads resulted in substantial crack closure effects, which, however, did not occur immediately after the overloading, but after further fatigue crack extension. Results are discussed considering both theoretically and experimentally estimated plastic zone size and considering crack closure issues recently published in the literature.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2014

Confidentiality

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

Name of the periodical

Key Engineering Materials

ISSN

1013-9826

e-ISSN

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Volume of the periodical

577-578

Issue of the periodical within the volume

2014

Country of publishing house

CH - SWITZERLAND

Number of pages

4

Pages from-to

325-328

UT code for WoS article

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EID of the result in the Scopus database

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