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Find stress intensity factor - thick cylinder:
A thick cylinder of ri = 10 mm, r0 = 70 mm carried equal and symmetric radial cracks 6 mm long on opposite sides of inner surface. The inner surface is jacketed with a thin rubber membrane and pressurised with 2 N/mm2 pressure. Find SIF.
Solution
r0 / ri= 70 /10 = 7; a / (r0 - ri) = 6 / (70 - 10) = 0.1
From Figure, for r0 / ri =7 and a / (r0 - ri) =0.1, Y= 0.46
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