eddy current flaw test machine.
: Originally an product of the modern century, an eddy current flaw detector is used for nondestructive testing. The basic principle it follows is the application of alternating currents to the material being tested, and generation of eddy current itself out of that. Magnetic field generated by these eddy currents combines with flaws or defects in the material examined and makes them visible. The main functions of this machine are broken into several categories: detecting superficial surface flaws, subsurface defects, variation in material thickness, and changes of electrical conductivity. Technical performance offers advanced signal processing techniques; the machine is capable of high resolution imaging, up to single pixels; automated scanning systems mean onerous manual labor can be avoided. Used in industries such as aerospace, automotive, manufacturing, and power generation where material quality is paramount, this machine has now found widespread application.