Talk Composites - The Forum for Advanced Composites

Fabric Weights

http://www.talkcomposites.com/Topic23109.aspx

By Junior - 4/12/2017 1:15:25 PM

I'm a little confused with something and wondered if someone could enlighten me...

The recommended ratio of resin to fabric for fibreglass and Carbon Fibre appears to be the same i.e. 200g of resin for 200g of fabric, so when people say the same product made in carbon would weigh less as it requires less resin, how can this be?Blink
By Fasta - 5/9/2017 2:26:26 AM

Without getting into composite engineering calculations which is not my thing I do it like this.

Measure the thickness of your current mixed laminate part. eg 4mm

4mm in all carbon using a vacuum compaction process like infusion or pre preg is equal to 4000g of carbon.

An equal thickness like this with all carbon is of course going to be stronger than your mixed laminate version. To make an equivalent strength for me is just estimation so something less than 4000g of carbon is what you need. Make a part or a sample using 1-2 less layers of carbon and then see how it feels.

Estimation/trial and error/hands on