Process of Low-Cycle Fatigue Damage of Aircraft Alloy AlCu4Mg1

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F09%3A00160454" target="_blank" >RIV/68407700:21340/09:00160454 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Process of Low-Cycle Fatigue Damage of Aircraft Alloy AlCu4Mg1

Popis výsledku v původním jazyce

Low-cycle fatigue (LCF) process of smooth and notched specimens is studied. Cross-sections parallel to the longitudinal axis of the specimens were observed using a scanning electron microscopy (SEM). Initial micro-cracks in brittle particles were found in the alloy D16CT1 (AlCu4Mg1 type) in original state. The growth of these primary micro-cracks to the surrounding matrix during LCF process was watched in dependence on the initial micro-crack length, plastic strain amplitude, and number of cycles. Obtained results are discussed in relation to the Tomkins crack growth law. It has been found out that the Manson-Coffin law is only an alternative formulation of the Tomkins crack growth law and that the LCF process is substantially identical with the surface micro-crack growth. Conclusions bring also a new view on the transfer of the standard LCF tests results to the small process volume at the high-cycle fatigue (HCF) crack tip.

Název v anglickém jazyce

Process of Low-Cycle Fatigue Damage of Aircraft Alloy AlCu4Mg1

Popis výsledku anglicky

Low-cycle fatigue (LCF) process of smooth and notched specimens is studied. Cross-sections parallel to the longitudinal axis of the specimens were observed using a scanning electron microscopy (SEM). Initial micro-cracks in brittle particles were found in the alloy D16CT1 (AlCu4Mg1 type) in original state. The growth of these primary micro-cracks to the surrounding matrix during LCF process was watched in dependence on the initial micro-crack length, plastic strain amplitude, and number of cycles. Obtained results are discussed in relation to the Tomkins crack growth law. It has been found out that the Manson-Coffin law is only an alternative formulation of the Tomkins crack growth law and that the LCF process is substantially identical with the surface micro-crack growth. Conclusions bring also a new view on the transfer of the standard LCF tests results to the small process volume at the high-cycle fatigue (HCF) crack tip.

Druh

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

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/GA101%2F08%2F1623" target="_blank" >GA101/08/1623: Inovační postupy pro odhad zbytkové životnosti těles s únavovými trhlinami</a><br>

Návaznosti

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

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Materials Engineering

ISSN

1335-0803

e-ISSN

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Svazek periodika

16

Číslo periodika v rámci svazku

3a

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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