Experimental Characterization and Modeling of Damage in Composites Under Ballistic Impact
Abstract
The primary focus of our research is to understand the ballistic behavior of composites. It is shown that the shock response of composites is quite different from that of the metals, and the presence of heterogeneous interfaces in composites can be attributed to this fact. The interfaces cause multiple scattering, and the magnitude of scattering depends on the level of heterogeneity as indicated by impedance mismatch. In this research work we have developed an analytical model for the plate impact of a bilaminate material system by considering explicitly material heterogeneity and the equation of state. Comparison of the model with experimental data and numerical results show good agreement. Further, a comprehensive analysis of cohesive zone models has been carried out to study its applicability to represent damage and fracture from a micromechanical perspectives. Thus cohesive zone models can be used within the framework of continuum mechanics to analyze damage in the composites under ballistic loading conditions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2003
- Accession Number
- ADA413347
Entities
People
- Namas Chandra
Organizations
- Florida A&M University