Ballistic Impact on Glass/Epoxy Composite Laminates

R. Velmurugan; Rahul S. Sikarwar

doi:10.14429/dsj.64.3882

R. Velmurugan Indian Institute of Technology Madras, Chennai-600 036
Rahul S. Sikarwar Indian Institute of Technology Madras, Chennai-600 036

DOI: https://doi.org/10.14429/dsj.64.3882

Keywords: Ballistic Limit, strain rate, angle-ply laminate, residual velocity, energy absorbed

Abstract

Glass/epoxy composite laminates are subjected to impact loading and the energy absorbing capacity of the laminates is studied. In the present study, laminates with four different orientations and thickness values are considered. Analytical study is carried out based on energy method and results are compared with FE results obtained from Abaqus/Explicit software. Results obtained from the analytical methods are showing good agreement with the FE results. It is found that cross-ply laminates are most efficient in ballistic resistance when compared with the laminates of other orientations. It is also noticed that the energy absorbing capacity is decreasing with increase in velocity of the projectile for a given lay-up and thickness value.

Defence Science Journal, Vol. 64, No. 4, July 2014, pp. 393-399, DOI:http://dx.doi.org/10.14429/dsj.64.3882

Author Biographies

R. Velmurugan, Indian Institute of Technology Madras, Chennai-600 036

Dr R. Velmurugan, PhD, is a Professor in the Department of Aerospace Engineering at Indian Institute of Technology Madras, Chennai. He teaches courses on aerospace structural mechanics, composite structures, impact mechanics and structural design. His research interest includes impact mechanics, composite materials, FE Analysis, nanomaterials.

Rahul S. Sikarwar, Indian Institute of Technology Madras, Chennai-600 036

Dr Rahul S. Sikawar PhD from Department of Aerospace Engineering, Indian Institute of Technology Madras. Presently, he is working as a Consultant Scientist in DRDL Hyderabad. His research interests include composite structures, impact analysis and buckling analysis.