The filament-wound E-glass/epoxy pressure vessel described in Example 4.4 is to be used in a hot-wet environment with temperature \(T=100^{\circ} \mathrm{F}\) \(\left(38^{\circ} \mathrm{C}\right)\) and moisture content \(M_{r}=4 \%\). The glass transition temperature of the dry epoxy resin is \(250^{\circ} \mathrm{F}\left(121^{\circ} \mathrm{C}\right)\), and the lamina strengths listed in Table 4.1 are for a temperature of \(70^{\circ} \mathrm{F}\left(21^{\circ} \mathrm{C}\right)\) and a moisture content of zero. Determine the internal pressure \(p\) that would cause failure of the vessel according to the maximum stress criterion. Compare with the result from Example 4.4.

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EXAMPLE 4.4 The filament-wound pressure vessel described in Example 2.5 is fabricated from E-glass/epoxy having the lamina strengths listed in Table 4.1. Determine the internal pressure p, which would cause failure of the vessel according to (a) the maximum stress criterion and (b) the Tsai-Hill criterion.