Talk Composites - The Forum for Advanced Composites

Carbon Fibre Tube (Roll Wrapped)

http://www.talkcomposites.com/Topic19381.aspx

By Delumrc - 9/29/2015 1:34:24 PM

Goodmorning,i think there is an error in the 14mm ID Carbon Fibre Tube (Roll Wrapped): Stiffness I x E (KNm²)= 0.12
This value is wrong in my opinion because if we look at the 12.7mm ID Carbon Fibre Tube (Roll Wrapped): Stiffness I x E (KNm²)= 0.14it decreases passing from 12.7mm to 14mm!How can it decrease since "E" is equal (due to the same layup and materials) and "I" increases due to the increase of section??
If i manually calculate IxE i get this results:14mm tube: 0.173 KNm²12.7mm tube: 0.14KNm²so i think there is an error in your datasheet.thank youMarco De Luciano