Abstract
This paper addresses the determination of fatigue crack initiation lifetime in notched round bars under multiaxial loading on the basis of a total strain energy density approach. The modus operandi consists of developing a fatigue master curve relating the total strain energy density and the number of cycles to failure from the outcomes of a set of standard strain-controlled fatigue tests. In a second stage, the total strain energy density of the notched sample is computed from representative hysteresis loops obtained via linear-elastic finite-element models. The proposed methodology is tested in cylindrical bars with lateral U-shaped notches and cylindrical bars with blind transverse holes subjected to different constant-amplitude proportional bending-torsion loading. After fatigue testing, specimen surfaces are examined by scanning electron microscopy to identify the main failure micro-mechanisms.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Wu SC, Zhang SQ, Xu ZW, Kang GZ, Cai LX (2016) Cyclic plastic strain-based damage tolerance for railway axles in China. Int J Fatigue 93:64–70
Branco R, Prates PA, Costa JD, Berto F, Kotousov A (2018) New methodology of fatigue life evaluation for multiaxially loaded notched components based on two uniaxial strain-controlled tests. Int J Fatigue 111:308–320
Branco R, Antunes FV, Ferreira JA, Silva JM (2012) Determination of Paris law constants with a reverse engineering technique. Eng Fail Anal 16:631–638
El Haddad MH, Topper TH, Smith KN (1979) Prediction of non-propagating cracks. Eng Fract Mech 11:573-84
Glinka G (1985) Calculation of inelastic notch-tip strain–stress histories under cyclic loading. Eng Fract Mech 22:839–854
Acknowledgements
The authors would like to acknowledge the sponsoring under the project number 016713 (PTDC/EMS-PRO/1356/2014) financed by Project 3599: Promover a Produção CientÃfica e Desenvolvimento Tecnológico e a Constituição de Redes Temáticas (3599-PPCDT) and FEDER funds.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Switzerland AG
About this paper
Cite this paper
Branco, R., Costa, J.D., Berto, F., Kotousov, A., Antunes, F.V. (2019). Prediction of Fatigue Crack Initiation Life in Notched Cylindrical Bars Under Multiaxial Cycling Loading. In: Correia, J., De Jesus, A., Fernandes, A., Calçada, R. (eds) Mechanical Fatigue of Metals. Structural Integrity, vol 7. Springer, Cham. https://doi.org/10.1007/978-3-030-13980-3_35
Download citation
DOI: https://doi.org/10.1007/978-3-030-13980-3_35
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-13979-7
Online ISBN: 978-3-030-13980-3
eBook Packages: EngineeringEngineering (R0)