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(Solved): 11 A pipe with a mean radius of r=1200mm and a wall thickness of t=26mm is designed to operate under ...
11 A pipe with a mean radius of
r=1200mmand a wall thickness of
t=26mmis designed to operate under internal pressure,
p. It is made of a steel with a fracture toughness of
K_(IC)=120MPa\sqrt(m). At inspection, an edge crack on the surface of the pipe with a length
a=7mmwas detected (see figure). What is the maximum internal pressure,
p, that the pipe can carry that does not cause brittle fracture? (You may ignore the curvature effects on the stress distributions and the geometry factor.) Give your answer in MPa to 3 significant figures. Maximum pressure:
p=
?MPa
