A cylinder subjected to internal pressure pi has an outer diameter of 14 in and a 1-in wall thickness. For the cylinder material, KIc = 72 kpsi ∙ , Sy = 170 kpsi, and Sut =192 kpsi. If the cylinder...

A cylinder subjected to internal pressure
p
i
has an outer diameter of 14 in and a 1-in wall thickness. For the cylinder material,
K
_Ic

= 72 kpsi ∙ ,
S
_y
= 170 kpsi, and
S
_ut

=192 kpsi. If the cylinder contains a radial crack in the longitudinal direction of depth 0.5 in determine the pressure that will cause uncontrollable crack growth.