Before revision: By apply a repeated sequence separated by loads that produce a distinctive pattern the growth from each segment of loading can be measured using a microscope in a technique called quantitative fractography, the rate of growth for loading segments of constant amplitude or variable amplitude loading can be directly measured from the fracture surface.
After revision: By applying a repeated sequence separated by loads that produce a distinctive pattern the growth from each segment of loading can be measured using a microscope in a technique called quantitative fractography, the rate of growth for loading segments of constant amplitude or variable amplitude loading can be directly measured from the fracture surface.