pöörisvoolu kasutamisel põhinev mittepurustav katsetamine (vt pöörisvoolkatse, pöörisvoolotsekatse, pöörisvoolkaudkatse), an electromagnetic nondestructive testing method in which eddy-current flow is induced in the test object; changes in flow caused by variations in the object are reflected in a nearby coil or coils where they are detected and measured by suitable instrumentation (see: eddy current test, on-line eddy current test, off-line eddy current test)