J - CTOD relationship for clamped SE(T) specimens based on three-dimensional finite element analyses

J –CTOD relations in clamped SE(T) fracture specimens including 3-D stationary and growth analysis

“…These analyses show that the CTOD resistance curves lie slightly above the corresponding curves derived from the present work but they nevertheless compare very well with our results. Now direct attention to the CTOD-Da data derived from the J-CTOD relation of H&Z [57]. While generally good agreement with our results (as well with those from S&T) is observed in the range Da 6 1 mm, the fracture resistance curves obtained by their m-values deviate significantly from our CTOD resistance curves.…”

“…18 also includes the CTOD À Da data obtained from two related J-CTOD formulations previously developed by Shen and Tyson (S&T) [56] and more recently by Huang and Zhou (H&Z) [57]. Both formulations derive from finite element computations incorporating large strain analysis of stationary cracks (thereby incorporating crack-tip blunting effects) whereas our previous Eqs.…”

“…(14) and (15) are derived from small strain analyses of stationary cracks. To facilitate this comparison, the J-values are determined based on the same procedure outline previously (which derives from the work of Mathias et al [55]) with the CTOD then evaluated from the m-values provided by the works of S&T [56] and (H&Z) [57]. Consider first the measured fracture resistance curve obtained by the m-values reported by S&T [56].…”

Predicted Fracture Behavior of Shaft Steels with Improved Corrosion Resistance

“…Some of the recent articles on this topic include discussion on the accuracy of J-integral obtained by experiments, two-dimensional (2D) FE analysis, three-dimensional (3D) FE analysis, or the Electric Power Research Institute method [6]. J-integral and CTOD are related through plastic constraint factors evaluated using 3D FE analyses of a clamped, single-edge tension specimen [7]. Methodology to evaluate 3D J-integral for finite strain elastic-plastic solid using FE analysis is proposed [8].…”

Residual Stress State in Single-Edge Notched Tension Specimen Caused by the Local Compression Technique

“…Recently, the use of the non-standard single-edge (notched) tension (SE(T) or SENT) specimen to determine the resistance curve has gained significant research interests (e.g. [3,4]) in the energy pipeline industry largely as a result of the development of the strain-based design and assessment methodologies. Fig.…”