Fretting Fatigue and Crack Initiation Analysis of 42CrMo4+QT and 34CrNiMo6+QT Steels
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00386882" target="_blank" >RIV/68407700:21220/25:00386882 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.4028/p-0dSkTu" target="_blank" >https://doi.org/10.4028/p-0dSkTu</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/p-0dSkTu" target="_blank" >10.4028/p-0dSkTu</a>
Alternative languages
Result language
angličtina
Original language name
Fretting Fatigue and Crack Initiation Analysis of 42CrMo4+QT and 34CrNiMo6+QT Steels
Original language description
Reliable fretting fatigue prediction requires rigorous evaluation of analytical methods under realistic loading conditions. This study builds upon previous research on the fretting fatigue behavior of 42CrMo4+QT steel by incorporating new experimental data from square cross-section specimens tested under axial loading with various pad geometries. The application of a non-zero tensile mean bulk load promoted localized crack initiation near the specimen edges, leading to more asymmetric crack growth in the majority of cases unlike the more symmetric behavior observed under fully reversed loading (R = –1). Finite element analysis (FEA), along with the Dang Van and Papuga QCP methods, was employed to evaluate whether this behavior could be accurately modeled. In addition, a linear-elastic fracture mechanics approach was used to model and explain these observations. Furthermore, fretting fatigue tests on 34CrNiMo6+QT steel revealed that tribological effects governed crack initiation, in contrast to the stress-driven failure observed in 42CrMo4+QT. These findings enhance understanding of fretting fatigue mechanisms and improve predictive modeling approaches.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
<a href="/en/project/GF23-06130K" target="_blank" >GF23-06130K: Procedure for fatigue estimation in contacts: Local multiaxial analysis of stress-related and tribological effects</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Key Engineering Materials
ISBN
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ISSN
1662-9795
e-ISSN
1662-9795
Number of pages
13
Pages from-to
71-83
Publisher name
TRANS TECH PUBLICATIONS LTD
Place of publication
Zurich
Event location
Ghent
Event date
Jul 29, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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