It is generally believed that a lower bound on the fracture toughness of a material is obtained
from a standard test, particularly in metals where yielding occurs prior to fracture. The …

Crack tip plasticity and fracture toughness are usually connected with T-stresses under
mixed mode I/II loading conditions. By means of von Mises yield criterion, a new analytical …

In structural integrity assessment, it is important to measure the in-plane and out-of-plane
constraint effects which have strong influences on fracture toughness. Based on the …

Variation of apparent fracture toughness under predominantly (elastic) brittle fracture is
investigated. Williams' asymptotic series solutions, including higher order terms, are used to …

Six constraint parameters (namely T-stress, Q, h, T z, A d and A p) have been numerically
calculated for semi-elliptical surface cracks in pipes so as to comparatively investigate their …

The requirements for J-dominance, limits of the single-parameter criterion to characterize the
fracture of engineering structures, and two-parameter fracture analyses are first reviewed …

Three-dimensional (3D) elastic–plastic finite element analyses (FEA) are performed to study
constraint effect on the crack-front stress fields for single-edge notched bend (SENB) …

Fracture toughness and allowable loads are affected by in-plane and out-of-plane
constraints, and the influences are studied in stiffened plates. Under small scale yielding …