Hi
May be this point is good for searching:
http://msl1.mit.edu/msl/lisboa/pdf/paulport.pdf.
In MIT a phd project is done about composite processing cost modeling and you can find it from library for free.
A. M. Rezadoust
icomposite@yahoo.com
In the composite materials, fillers (fine particle with l/d near 1) can't impove strength of material but can change modulus and impact properties and specially thermal properties of materials.
A.M. Rezadoust
icomposite@yahoo.com