| 摘要 |
PURPOSE:To enhance ultrasonic flaw detecting and thickness measuring sensitivity, by interposing a conductive medium between an electromagnetic ultrasonic probe and a material to be inspected. CONSTITUTION:When a conductive medium 11 such as an alumina powder is interposed between an electromagnetic ultrasonic probe and a material 1 to be inspected 1, equivalent impedance to the eddy current generated in the surface part of the material to be inspected becomes small by the internal flaw of the material 1 to be inspected or the ultrasonic wave reflected from the other surface thereof and the eddy current receiving sensitivity by the probe 7 is enhanced. As a result, electromagnetic ultrasonic flaw detection and thickness measuring sensitivity is enhanced. |
