| 摘要 |
PURPOSE:To shorten the scanning time, by setting two kinds of the scanning pitch widths for square scanning lines, i.e. broad and narrow, in advance, in performing the square scanning, performing the narrow scanning for the defect region of a body to be checked, and preforming the broad scanning in the non-defect region. CONSTITUTION:In a microcomputer 14 of an ultrasonic wave checking device, a square scanning line 17a having a broad scanning pitch width and a square scanning line 17b having a narrow scanning pitch width are stored. In this case, the conversion from the broad square scanning line 17a to the narrow square scanning line 17b is accomplished as follows: the defect of a body to be checked is detected by the reflected wave of a probe 1; the signal is outputted to the microcomputer 14 through a flaw detector 8; the signal is further outputted to an automatic scanning mechanism 9 from the microcomputer 14; and the control is performed. In this way, clear indication and acknowledgement of the position, shape, and contour of the defect can be performed, and the scanning time can be shortend extremely. |
