Microstructural Design & Optimization of Highly Filled Epoxy Based Composites
Abstract
The dynamic mechanical properties of multi-constituent particulate composites, consisting of individual Ni and Al particles dispersed in an epoxy matrix are investigated in this study. Properties of such composites depend on the mechanical and physical properties of the individual components; their loading density; the shape and size of the particles; the interfacial adhesion; residual stresses; and matrix porosity. These multi-phase particulate composites systems, particularly those with high fill densities, have not typically been studied rigorously, to date. Investigation of the effects of higher-order microstructural features, such as particulate size, dispersion, etc., on the static and dynamic mechanical response of these multi-phase (n > 2) polymer-metal-composites was performed using a factorial design of experiments. The high strain rate compressive properties of these materials were characterized, using a split Hopkinson pressure bar, and the elastic properties of these complex composites were determined using dynamic mechanical analysis. The properties were correlated with microstructural characteristics using factorial design concepts to establish the effects on strength at low and high strain rates.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2009
- Accession Number
- ADA511295
Entities
People
- Bradley W. White
- D. W. Richards
- J L Jordan
- Jonathan E. Spowart
- Naresh N. Thadhani
Organizations
- Air Force Research Laboratory