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The main stress exerted by the internal pressure on the cylinder is hoop stress. The equation for hoop stress can be found here: https://www.engineeringtoolbox.com/stress-thick-walled-tube-d_949.html
Other stresses to consider are axial and radial (smol)
Variables:
- max internal pressure: 3000 psi
- outside pressure: atmospheric (14.7 psi)
- inner radius: 1.75"
- outer radius: found to be >1.9"
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