Couple of questions about carbon fibre

[vaanish]

Hi, I’ve done lots of research about carbon fibre, but there are two things I really can’t find. Firstly, why do the teams 'bake' the carbon fibre, and why does that make it stronger? Also, what is the young's modulus of the CFRP that is used in the chassis?

Thanks allot guys

[Flummo]

The epoxy resin used with the carbon fibre needs heat to cure. (There are other types that cure in room temperature too, but high temperature epoxy is in general better.)

[vaanish]

Thanks alot for the quick reply Flummo

Also, does anyone have a stress strain graph comparing CFRP and aluminium/steel, i would be extremely gateful

[Carlos]

Graphs. You need graphs? Dozens in NASA's Advanced Composite Structures Paper. It's just about the original government research. I've mentioned it several times and where it is on the web. Just look through my posts and you should turn it up.

[Jersey Tom]

Doesn't appear you've done much research!

Stress / strain plots?

What type of fiber cord? Unidirectional? Weave? What resin? How many layers? What ply orientation? What test direction?

What are you using this for?

Since the strength and stiffness of CRFP are highly dependent on fiber orientation and how you're testing, saying you want to "just compare CRFP" versus an isotropic material is a little odd.