Research Projects
Structural design in high energy impacts
Variation of curvature
The curvature of target structure was varied from a flat plate like structure to a complete hemisphere. Correpondingly, the variation in fracture mechanics and ballistic performance was evaluated.
Fracture mechanics of curved structures
Results indicate a strong correlation between the curvature and fracture mechanics. The dominant stresses transition from tensile to shear with increasing curvature resulting in change from petalling to plugging.
Ballistic performance
The curvature has a limitting value beyond which it should not be increased to maximise its efficacy.
Oblique impact
Oblique impact studies have been performed to estimate the effectiveness of curved structures under diverse impact loading conditions.
3D Printed Lattice structures
Lattice structures have been fabricated using Stereolithography (SLA) 3D Printing technique to study their static compression behaviour.
The CAD models of these structures were prepared using modelling softwares.
3D Printing parameters were optimized for the fabrication of these structures.
Compression test was conducted on all the structures to find the best one absorbing most energy.
Re-entrant structure
Swastik structure
Chiral structure
Gyroid structure
Lamellar ceramic composite - Experimental setup and slurry
Freeze casting setup
The above setup has been fabricated indigeneously to realize unidirectional solidification under the influence of cooling temperatures.
Optimisation of slurry
The ceramic slurry to be utilized for developing lamellar structure using freeze casting has been optimized based on their pH values.
Desired microstructure
The aim is to develop the microstructure as shown above. It consists of multiple ceramic lamellae joined together. [Ref]