Title: Development of new creep prediction model for use through computational modelling for SS-304 material
Abstract:
With the increase of the operational parameters, structural components in power plant are suffering from elevated temperatures and pressures, which are high enough for creep to occur. This may lead to failure and fracture in components. Over the past several decades, considerable efforts have been made to gain a fundamental understanding of the creep mechanism. Much attention has been paid to life prediction of equipment to ensure safety and reliability in power plants. Based on the Norton- Bailey and Kachanov-Rabotnov constitutive models, a modified new model is proposed in this abstract to be able to describe the whole three stages of creep, i-e primary, secondary and tertiary stage. Numerical calculations with the modified constitutive model were performed to simulate the damage development of uniaxial specimens. The emphasis was laid on the effect of specimen dimensions and stress on the damage development. The proposed new model validation was executed by comparing the FE results with experimental creep results obtained by applying acoustic emission technique. The results show a good agreement of the novel model that complete creep curve can be obtained for any material and the stress have remarkable effect on the creep behaviour and damage development.
Audience Take away Notes:
- Audience will be understand the significance in predicting the material degradation due to creep failure.
- Conducting actual creep tests are time consuming and costly, finite element prediction gives near accurate results.
- The audience can expand the scope of the research work to high level by going in depth of the subject that will help in achieving their research goals and career.
