Fracture Toughness Calculator

Fracture Toughness Equation

$$ K_{IC} = Y \sigma \sqrt{\pi a} $$ where:

K_IC = Fracture Toughness (Pa m^1/2)

Y = Dimensionless Geometric Factor (Dimensionless)

σ = Applied Stress (Pa)

a = Crack Length (m)

Calculator

Property to Calculate:

Fracture Toughness (K_IC):

Geometric Factor (Y):

Applied Stress (σ):

Crack Length (a):

Equation Assumptions

The material behaves linearly and elastically.
Deformations are small (for large strains the linear relationship between shear stress and strain may not hold).
Material is homogeneous.
The material is isotropic.