Damage Based Fatigue Life Prediction of AISI 1040 Steel

Vinyas, . and Upadhyaya, Y S and Sridhara, B K (2016) Damage Based Fatigue Life Prediction of AISI 1040 Steel. In: International Conference & Exhibition on Fatigue, Durability and Fracture Mechanics & Symposium on Condition Assessment/Residual Life Assessment & Extension, 28/09/2016, J N Tata Auditorium, IISc, Bangalore.

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Abstract

Continuum Damage Mechanics (CDM) based model for uniaxial and fatigue loading has been adopted in the present study. The model relates strain levels to damage which is further associated to crack initiation life. Monotonic and cyclic properties of AISI 1040 were considered from literature. Critical damage value (Dc) which is a material parameter, is obtained and used to predict crack initiation life. Crack initiation life for different damage levels and at various strain amplitudes are evaluated. The predicted crack initiation life is in good agreement with the life obtained using Coffin-Manson’s relation and experimental values. Fatigue life prediction has been carried out in the strain amplitude ranging from 0.2 to 0.4%, stress ratio of -1 and at room temperature.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Continuum Damage Mechanics, Critical damage, Crack initiation life, AISI 1040 steel
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 26 Dec 2016 15:58
Last Modified: 26 Dec 2016 15:58
URI: http://eprints.manipal.edu/id/eprint/147811

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