| 摘要 |
PURPOSE:To rapidly and properly discriminate or evaluate a flaw even when the angle of refraction of a probe or the thickness of a material to be inspected changes by respectively setting the angle of refraction of the probe and the thickness of the material to be inspected and generating the discrimination signal corresponding to a skip distance. CONSTITUTION:When the angle theta of refraction of the ultrasonic wave incident from a probe 3 is set to the first setting device 8, a conversion signal tan thetais outputted from a function generator 11. The output from the function generator 11 and the output from the second setting device 9 to which the thickness (t) of a material to be inspected are supplied to a multiplier 12 and the skip distance signal corresponding to a skip distance is obtained through a skip output circuit 13. A skip signal circuit 14 generates signals at a skip point and an intermediate point in synchronous relation to the timing signal from a synchronous control part 1. A descrimination signal circuit 15 receives the signals to generate a plurality of discrimination signals within a flaw detection range to display the same on a display device 7. As a result, the discrimination signals showing a flaw detection echo and a skip distance are simultaneously displayed on the display device 7. |
