On the relationship between critical tensile stress and fracture toughness in mild steel
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"On the relationship between critica..." refers background or methods in this paper
...Here, we refer to the asymptotic studies of plane strain crack tip singularities by RICE (196X), RICE and ROSENGREN (1968), and HUTCHINSON (1968), to the subsequent finite element solutions (based on elements which embed the appropriate strain singularity among their admissible deformation fields)…...
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...…strain for (a) small scale yielding (SGC) conditions for non-hardening material from tinite-element computer solution due to OSTERGFWN, and (b) small scale yielding conditions from singularity solution for hardening material due to RICE and ROSENGREN (1968) and HUTCHINSON (1968) (solid lines)....
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...6b) is the singularity solution for a strain-hardening material (n = 0 to 0.2) derived by HUTCHINSON (1968) and RICE and ROSENGREN (1968), again based on the conventional small geometry change (SGC) assumptions....
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