carbon fuel pipe under external pressure

[gyanam]

hi!

so my previous question was whether a 1mm thickness of carbon/epoxy would be able to withstand -37psi. this is what my calculations say - i'm just wondering if it makes logical sense...those of you with more experience?

the material is carbon fiber and epoxy, diameter is 2.5in, filament winding technique.

cheers,
gyanam

 

[TGS4]

What is the Code of Construction?
How is the pipe supported (what is the unsupported length)?

I'm a little less familiar with carbon fibre / epoxy. What is the effective compressive Young's Modulus? I know that the carbon fibres are excellent in tension, but how about compression?

 

[gyanam]

i'm thinking of filament winding the pipe. it's about 25 centimeters in length and looks like an 'S' - so it's bent twice with two 90°s. and it's supported at the two ends.

the effective compressive young's mod is 140GPa, its tensile strength is 1500MPa and compressive is 900MPa.