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Elastic-Plastic Fracture Mechanics 135
FIGURE 3.27 Critical CTOD values for cleavage fracture in bending and tensile loading for a low-alloy
structural steel. Taken from Anderson, T.L., ‘‘Ductile and Brittle Fracture Analysis of Surface Flaws Using
CTOD.’’ Experimental Mechanics, 1988, pp. 188–193.
FIGURE 3.28 Critical J values for cleavage as a function of crack depth and specimen size of single-edge-notched
bend (SE(B)) specimens. Taken from Kirk, M.T., Koppenhoefer, K.C., and Shih, C.F., ‘‘Effect of Constraint on
Specimen Dimensions Needed to Obtain Structurally Relevant Toughness Measures.’’ Constraint Effects in Fracture,
ASTM STP 1171, American Society for Testing and Materials, Philadelphia, PA 1993, pp. 79–103.
