Instructables

Carbon Fiber over Fiberglass for fabric

When making a composite anything, what is the advantage of having carbon fiber instead of normal fiberglass? I was wondering because at US composites, the carbon fiber is almost 9 times more expensive that the fiberglass.

carbonuser 7 years ago
this is the link for this material
http://www.sohim.by/_modules/_cfiles/files/rayon%20carbon%20cloth_50.pdf

it s about 100 dolars per kilos
carbonuser 7 years ago
do you know this material , i want understand if this low tensile strenght fabric is good for structural aircraft .
Honus7 years ago
Simply put, carbon fiber has a much greater tensile and compressive strength than fiberglass at a lower density. So given an equivalent matrix (epoxy binder) and layup you can usually have a lighter weight finished product that has greater strength and stiffness. If you want to learn more a good book to read is "Competition Car Composites: A Practical Guide" by Simon McBeath Hope this helps!
Ferrite (author)  Honus7 years ago
Thanks a lot for the help! I am itching to make a project out of fiberglass, but have too many ideas that would cost too much :-(
Honus Ferrite7 years ago
You're welcome! I've been thinking about doing an instructable that shows how to make simple fiberglass and carbon parts using lost foam patterns. It's how I made some carbon fiber parts for my friend's racecar. It's not really the ideal method for structural components but you can make some cool stuff. It will take me a while to write up as I'd have to see if I can dig up all the old photos.
Ferrite (author)  Honus7 years ago
That would be great if you could post an instructable!
Honus Ferrite7 years ago
Here's photo of one of the carbon parts I made- it's part of the front section of a Mazda/Ralt CSR race car. I don't have many of the photos I took when I made it so I'll post a new instructable that shows how to make a helmet from fiberglass using a lost foam method. I won't have it done until Halloween though!
Mazda9Dfinishedcarbon.jpg
Ferrite (author)  Honus7 years ago
That looks amazing! Can you make a lot of money making parts for cars?
Honus Ferrite7 years ago
Thanks! Can make money making carbon parts for cars? That depends on a lot of things- proper design and engineering knowledge, manufacturing capabilities, etc. Carbon is one of those things that is really easy to screw up if you don't know what you're doing. The parts I made were non structural- all I had to do was modify existing bodywork, which is a lot simpler that creating a component that is designed to carry structural loads.
Ferrite (author)  Honus7 years ago
So you add the carbon fiber on to the existing hood make the cars look cool, right?
Honus Ferrite7 years ago
Some people do that- it's called "carbon look." :P The better quality hoods are all carbon, although some are a mix of carbon and fiberglass. The parts I made were all carbon.
Ferrite (author)  Honus7 years ago
Thanks for all of you help!