New contributions to R-curves and bridging stresses - Applications of weight functions

Focusing on crack growth resistance in ceramics, this booklet explores R-curve behavior, which is characterized by increased resistance during crack propagation. It examines the mechanisms behind this phenomenon, including bridging effects between crack surfaces, phase transformations near the crack tip, and the formation of micro-cracking zones. The discussion emphasizes the significance of bridging behavior and utilizes the fracture mechanics weight function procedure to analyze these observed effects.