Investigation on Spb Method Based on Nondimensional Load Separation Principle for SEB and CT Specimens
In this work, a nondimensional load separation conforming to similarity principle was proposed. Based on this new principle, similarity simulation of the physical phenomenon between the prototype sample and the dimension-changed model sample can be implemented. Then, a modified separation parameter Spb method was developed, which can absolutely eliminate the effect of referencing blunt cracked specimen on the instantaneous crack length estimation of the sharp cracked specimen, and the forced blunt-corrected initial crack length and the final crack length are recommended as the calibration points for J-resistance curve estimation. Finally, the modified Spb method is successfully applied in the J-resistance curve estimation of two steels with CT and SEB specimens, respectively.
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
C. Bao and L. X. Cai, "Investigation on Spb Method Based on Nondimensional Load Separation Principle for SEB and CT Specimens", Applied Mechanics and Materials, Vols. 117-119, pp. 480-488, 2012