The experimental study of energy dissipation during fatigue crack propagation under biaxial loading

The work is devoted to experimental study of heat flux evolution at the fatigue crack tip during biaxial loading with a goal to relate the heat flux to the rate of crack propagation under different loading conditions. The plane samples of titanium alloy (Grade 2) 1 mm thick were weakened by notch to...

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Main Authors: Oleg Plekhov, Aleksei Vshivkov, Anastasia Iziumova, Aleksandr Zakharov, Valery Shlyannikov
Format: Article
Language:English
Published: Gruppo Italiano Frattura 2019-04-01
Series:Fracture and Structural Integrity
Subjects:
Online Access:https://www.fracturae.com/index.php/fis/article/view/2296/2355
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author Oleg Plekhov
Aleksei Vshivkov
Anastasia Iziumova
Aleksandr Zakharov
Valery Shlyannikov
author_facet Oleg Plekhov
Aleksei Vshivkov
Anastasia Iziumova
Aleksandr Zakharov
Valery Shlyannikov
author_sort Oleg Plekhov
collection DOAJ
description The work is devoted to experimental study of heat flux evolution at the fatigue crack tip during biaxial loading with a goal to relate the heat flux to the rate of crack propagation under different loading conditions. The plane samples of titanium alloy (Grade 2) 1 mm thick were weakened by notch to initiate fatigue crack at their centers. Infrared thermography and the contact heat flux sensor, which is based on the Seebeck effect, were used to monitor the dissipated thermal energy. The samples were subject to cyclic loading with constant stress amplitude at different biaxial coefficients. The experimental results confirmed the previous conclusions of the authors about two regime of energy dissipation at fatigue crack tip under Paris regime. At the first stage, the power of heat flux is proportional to the product of the crack rate by the crack length. The second stage is characterized by a traditional linear relationship between the crack rate and the heat flux.
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institution Kabale University
issn 1971-8993
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publishDate 2019-04-01
publisher Gruppo Italiano Frattura
record_format Article
series Fracture and Structural Integrity
spelling doaj-art-6da659126f6042c2924e23cafc4e85af2025-01-03T00:38:46ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-04-011348505710.3221/IGF-ESIS.48.0710.3221/IGF-ESIS.48.07The experimental study of energy dissipation during fatigue crack propagation under biaxial loadingOleg PlekhovAleksei VshivkovAnastasia IziumovaAleksandr ZakharovValery ShlyannikovThe work is devoted to experimental study of heat flux evolution at the fatigue crack tip during biaxial loading with a goal to relate the heat flux to the rate of crack propagation under different loading conditions. The plane samples of titanium alloy (Grade 2) 1 mm thick were weakened by notch to initiate fatigue crack at their centers. Infrared thermography and the contact heat flux sensor, which is based on the Seebeck effect, were used to monitor the dissipated thermal energy. The samples were subject to cyclic loading with constant stress amplitude at different biaxial coefficients. The experimental results confirmed the previous conclusions of the authors about two regime of energy dissipation at fatigue crack tip under Paris regime. At the first stage, the power of heat flux is proportional to the product of the crack rate by the crack length. The second stage is characterized by a traditional linear relationship between the crack rate and the heat flux.https://www.fracturae.com/index.php/fis/article/view/2296/2355FatigueBiaxial loadingCrack propagationDissipated energy
spellingShingle Oleg Plekhov
Aleksei Vshivkov
Anastasia Iziumova
Aleksandr Zakharov
Valery Shlyannikov
The experimental study of energy dissipation during fatigue crack propagation under biaxial loading
Fracture and Structural Integrity
Fatigue
Biaxial loading
Crack propagation
Dissipated energy
title The experimental study of energy dissipation during fatigue crack propagation under biaxial loading
title_full The experimental study of energy dissipation during fatigue crack propagation under biaxial loading
title_fullStr The experimental study of energy dissipation during fatigue crack propagation under biaxial loading
title_full_unstemmed The experimental study of energy dissipation during fatigue crack propagation under biaxial loading
title_short The experimental study of energy dissipation during fatigue crack propagation under biaxial loading
title_sort experimental study of energy dissipation during fatigue crack propagation under biaxial loading
topic Fatigue
Biaxial loading
Crack propagation
Dissipated energy
url https://www.fracturae.com/index.php/fis/article/view/2296/2355
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