Pulsed eddy current (PEC) is a new nondestructive testing (NDT) technique developed in recent years. More conductive material information including defects and the stress can be gotten from detection of complex aluminum-alloy structure of aerospace by using wideband exciting, PEC technique has become a hot research area in aviation NDT. On the basis of analyzing the state of the art of the research on PEC technique both inland and overseas, the defects and the stress of aerospace aluminum-alloy are studied ...