Axial Internal Flaw in a Long Pressurized Cylinder

S. Raju and J. C. Newman, Jr., Stress-Intensity Factors for Internal and External Surface Crack in Cylindrical Vessels, Trans. ASME, Ser. J, Journal of Pressure Vessel Technology, Vol. 104 (1982), pp. 293-298

  

Valid for 5 < r/t < 20 & a/c <12 & c/t < 0.8 (these are not automatically checked)

Crack propagation is simulated using the Forman expression:

da/dN = C1* DKm/((1-R)(Kc - DK))

Default data is for 2024-T3 from Dowling, Mechanical Behavior of Materials

Job name
ri = inside radius

t = wall thickness
a = initial crack length
c = initial crack depth
p = pressure
Yield strength
Fracture toughness
C1

m
Kc

R = stress ratio
Number of cycles
Engineering Materials
Last revised: March 28, 2004