METHOD OF TESTING QUALITY OF WELDS OF THIN-WALLED METAL PARTS AND DEVICE FOR ITS EMBODIMENT Russian patent published in 2001 - IPC

FIELD: nondestructive test. SUBSTANCE: method and device are intended for testing the butt welds of electrostatic screens, casings, cans, and vessels for liquid. Eddy currents are excited by induction coil from one side of tested article wall. Radiation area of induction coil is commensurable with section of minimum defect detected. Measurements are performed by means of measuring coil positioned from other side of article wall. Measuring coil area exceeds radiation of induction coil by two and more orders. EFFECT: increased testing method sensitivity and resistance of testing equipment to electromagnetic and temperature interference. 2 cl, 1 dwg