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      12-21-2020, 01:49 PM   #8
thorgal_24
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Very good information, thanks. Keep in mind that the properties for CFRP with epoxy resin matrix, which is used in the majority of the applications, are different than the dry CFRP, so yes it's a much lighter material than steel (about 80 lb for CFRP vs 490 lb per cubic ft for steel), but it's not stiffer than steel (Elastic modulus about 12 msi vs 29 msi). For sure it's much stronger than steel (120 ksi vs 36 ksi), remember that steel yields while CFRP fractures, so you wouldn't design to it's ultimate capacity, more to about 50%. CFRP is great material for impact and cyclic loading (good for fatigue and vibration). I agree with David70, CFRP is a great material when it's used in an optimum and functional way, and not for decoration. I spent over 25 years using it in many structural applications, at the same time I didn't recommend it in other applications.

Last edited by thorgal_24; 12-21-2020 at 02:11 PM..
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