|About this Abstract
||7th World Congress on Integrated Computational Materials Engineering (ICME 2023)
||Evaluation of stochastic safe life of a DP steel component subjected to fatigue using a micromechanics based approach
||Srimannarayana P, Harisankar K.R., Akash Gupta, K.V. Vamsi, Gerald Tennyson, B.P. Gautham
|On-Site Speaker (Planned)
Fatigue life being an extreme value property is dictated by the local microstructure. A finite element based micromechanics approach is employed to capture the influence of microstructural features in predicting the cyclic stress-strain response of ferrite-pearlite/martensite steels. The material response is modelled through Chaboche non-linear kinematic hardening and continuum damage mechanics models. A 10% drop in peak stress is used as a criterion for estimating the number of cycles for crack initiation (safe life). The developed micromechanics model is used to evaluate the effect of microstructural parameters like grain size, phase fraction, interlamellar spacing on fatigue response. The safe life prediction model is utilized in a stochastic framework to account for variability in microstructure and phase properties. The details of the micromechanics model, safe life design methodology, stochastic framework and the effect of microstructure on fatigue response will be presented.
||Planned: Other (describe below)