FOLLOW-UP AND CHARACTERIZATION OF DAMAGE IN STRESS-CORROSION CRACKINGBY EIS STUDY

We show the contribution of the electrochemical impedance technique in the characterization of damage in slow strain rate tests in a corrosi ve environment for different strain rates. From the results, the evolu tion of impedance modulus and phase versus time at a fixed frequency c an be correlated to the crack propagation for each strain rate studied and from electrochemical impedance spectroscopy an approach by electr ic equivalent circuits can be considered.