| 摘要 |
<p>According to this method: - using a transmitter of longitudinal ultrasound waves which is directed suitably, of adapted frequency and interacting with the surfaces of the bore (2) of an axle/shaft (1), there is generated at the surface of the said bore a transverse surface wave (27), - the amplitude (h) of the echoes obtained is compared to the values of a calibration curve (C) plotted using a bore (2A) provided with a calibration defect (5) and identical to the bore (2) to be inspected, - and when the amplitude (h) of an echo is greater than a predetermined fraction of the value indicated by the calibration curve, there is deemed to be a defect. <IMAGE></p> |
