ॐ असतोमा सद्गमय । तमसो मा ज्योतिर्गमय। मृत्योर्मामृतं गमय ।। ॐ शान्ति शान्ति शान्तिः ।।

-बृहदारण्यक उपनिषद् 1.3.28.

About the Group

Structures and deformation are critical to understanding the behavior under stress. While slow deformation relates to tectonics, fast deformation is seen in the case of impact craters, landslides and supershears. In a meteoritic impact, shock waves cause intense deformation at gigapascal peak pressures and extremely high strain rates. The applied structural group, led by Dr. Amar Agarwal, investigates this deformation. We use standard techniques such as field studies, microstructural analysis, and rock magnetic investigations (magnetic mineralogy, magnetic fabrics, and palaeomagnetism). This is coupled with various innovative investigative techniques like high-speed deformation experiments, mathematical modelling and hydrocode simulations. Our group has been working on problems of tectonic and structural evolution, and of high-speed deformation due to natural and other shock waves.

A couple of high speed impact experiments on Maggia Gneiss

Two‐stage space light‐gas gun at EMI accelerated 5mm, 0.177g Al spherical projectiles to 7.236 and 6.925 km/s for the experiments.

2D hydrocode simulation of high speed impact experiment on Quartzite

Basalt spherical projectile of diameter 6.18mm and weighing 0.3690g was accelerated to 5.457 km/s.

Funding Sources

© 2024, Swastik Suman Behera