Fracture Mechanics Criteria and Applications
Emmanuel Gdoutos
For this case the change in elastic strain energy due to the presence of a crack, as calculated by Sih and Liebowitz (2.13], is given by 2-2 e Tra” or w"--. (k + 1). ( 4.23) For A = 2a x 1, Equation (4.21) gives the critical stress required for unstable ...