In this paper, validity of the deterministic approach to transfer the fracture toughness Jc obtained with different thickness specimens was demonstrated. For this purpose, applicability of the (4δt, σ22c) failure criterion  was verified to transfer Jcs obtained for different specimen thicknesses in the fracture toughness database obtained from decommissioned Shoreham reactor vessel steel [2, 3]. The material tested was ASTM A533 Grade B Class 1 ferritic steel tested in the ductile-to-brittle transition temperature region. The critical value σ22c for twelve types of specimens (thickness in the range of 8 to 254 mm) showed only 4% variation. The fact that these critical values were always reached at the specimen mid-plane and the fact that cleavage always initiated at the specimen mid-plane supported the validity of the deterministic approach. Because the (4δt, σ22c) failure criterion requires only “single” set of test data for Jc transfer and because σ22c shows only a few % scatter, it seems to have a possibility to replace what Weibull stress is expected to do.
Applicability of a Deterministic Approach to Transfer the Fracture Toughness
Jc Between Different Specimen Thicknesses
- Views Icon Views
- Share Icon Share
- Search Site
Meshii, T, & Lu, K. "Applicability of a Deterministic Approach to Transfer the Fracture Toughness Jc Between Different Specimen Thicknesses." Proceedings of the ASME 2015 Pressure Vessels and Piping Conference. Volume 3: Design and Analysis. Boston, Massachusetts, USA. July 19–23, 2015. V003T03A059. ASME. https://doi.org/10.1115/PVP2015-45071
Download citation file: