The titanium is most likely to be Ti6-4 - Ti with 6% Aluminium and 4% vanadium. The oxygen content may vary, with less oxygen content being more expensive. Ti6-4 is the workhorse grade of Ti and constitutes over 70% of Ti made. Most other Ti grades have 6-4 as their base.
All the other materials you can look up on Wikipedia, but also try
www.matweb.com which is an excellent source of detailed data on materials. It includes the plastics with their tensile strength, so you could look compare the amount of glass fill with the tensile strength of each plastic and deduce where they might have higher, or lower glass fills based on the mechanical loads each part of the car has to take.
Having said all that, it is your thesis, not mine! Hope you find what you are looking for!
