Astronomy & Space Sciences
Title: | Fatigue Life Estimation of Structural Members Under Random Vibrations through Strain Gauge Measurements |
Area: | Astronomy & Space Sciences |
Focus Area: | Structural Engineering and Vibration Analysis |
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) Kharagpur, West Bengal |
Brief Description
Description : | During the lift-off of launch vehicle, ground structure and the components of the launch vehicle are subjected to intense vibration loads generated during lift-off. The high-speed plume jets from rocket exhaust consists of several noise-producing components, notably turbulent mixing noise, broadband impact noise, and screeching tones, which greatly impact the vehicle's structural integrity. The base plate and the jet deflector are the main components of the launch pad, which remain in direct contact with the plumes. Each of these noise components has a different dominant frequency band. The structural members exposed to random loads may fail due to fatigue. In view of the ground structures on the launch pad, the issue of fatigue damage becomes more severe. Since monitoring of these structures are essential to the safe launch of a rocket, the correct evaluation of
fatigue damage is being studied as part of this project. |
Related Technologies