TASC NASA
Tool for Analysis of Surface Cracks (TASC)
... cross-section dimensions (W and B), and linear plus power law material properties of elastic modulus, yield strength, and strain hardening coefficient. With the geometry and material parameters entered, TASC interpolates to the appropriate J(φ) vs. crack mouth opening displacement (CMOD) and far-field tension stress, σ, vs. CMOD solution, providing the full solution as CMOD ranges from zero out to the CMOD limit of the solution space for the given input parameters.