Process of Low-Cycle Fatigue Damage of Aircraft Alloy AlCu4Mg1

Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Process of Low-Cycle Fatigue Damage of Aircraft Alloy AlCu4Mg1
Original language description
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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JL - Fatigue and fracture mechanics
OECD FORD branch
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Project
<a href="/en/project/GA101%2F08%2F1623" target="_blank" >GA101/08/1623: Innovative techniques for assessment of residual life of bodies with fatigue cracks</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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