In support of the fracture mechanics data the crack propagation properties of engineering materials are determined using the following techniques;

Crack propagation
Crack Propagation (dA/dN) Testing is used to determine the rate of crack growth under the specified loading condition once a crack has been initiated in a specimen. All testing is carried out using PC controlled equipment, Crack size is measured as a function of the elapsed fatigue cycles using direct current potential drop method. The data is subjected to numerical analysis to establish the rate of crack growth expressed as dA/dN versus ΔK in both graphical and tabular form.