Technologies

Astronomy & Space Sciences

Title:

An Experimentally Validated Phase-field Damage Model for Fatigue Crack Growth in Residual Stress Field

Area:

Astronomy & Space Sciences

Focus Area:

Aerospace Engineering

Status:

Under Development

Social Benefits:

The project being undertaken by ISRO in collaboration with academia is directly or indirectly beneficial to the society.

Developing Agency:

Indian Institute of Technology (IIT) Kanpur, Uttar Pradesh

Brief Description

Description :

Under this project , a phase-field based fatigue damage model coupled to elasto-plasticity is being proposed to accurately correlate the fatigue crack growth rates in residual stress field for different cyclic strain ratios. Additionally, a multi-time scale methodology will be developed to enable crack growth simulations for large number cycles. In order to calibrate the phase field fatigue damage model, low cycle fatigue experiments of standard samples will be performed under various strain ratios. The findings from these experiments will be used to validate the phase field fatigue damage model.

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