Talk Composites - The Forum for Advanced Composites

Resin Infusion in difficult areas

http://www.talkcomposites.com/Topic6598.aspx

By composites - 6/19/2013 10:16:51 AM

I have a question about using carbon fibre cloth in difficult areas during the resin infusion process.
I want to rebuilt a carbon fibre diffuser of a friend because it is no longer available.
Here are some pictures of the diffuser:

http://imageshack.us/a/img203/3150/imageuoj.jpg
(picture 1)

http://imageshack.us/a/img713/7568/imageuik.jpg
(picture 2)

http://imageshack.us/a/img62/8633/imagevtod.jpg
(picture 3)

The areas on the left of picture 2 and 3 doesn't exist in reality, these are photos which I found in the web, because his diffuser is still mounted. I will create 2 moulds, one for the diffuser it self and one for red marked area on picture 3 which holds the diffuser against the car. After the production of the moulds, we can go to the resin infusion but I don't know if it's possible to lay a whole carbon fibre cloth in the mould and in the green ares on picture 3. I thought about 3 layer of 245 g/m² carbon cloth, but it is a part where the carbon look is very important, and the carbon structure should be perfect.

Is it possible to position the carbon fibre cloth perfectly into the green areas? If yes/how?

Which carbon fibre weight do you think is used for the first layer of this diffuser? 

-Marc

By Warren (Staff) - 6/19/2013 4:56:08 PM

That was made using pre-preg carbon fibres hence much much easier to lay the fabric where you want neatly.  Also they probably used a multipart mould.

You would be best off using ProFinish Carbon Fibre 2/2 Twill to do the surface visible layer. This is because it can be neatly and precisely cut with scissors so you can leave oval cut outs to lay in carbon fabric for the recesses. 

They look to have used a 200gsm weight surface layer and a 400gsm or similar backing layer in places.