| 摘要 |
a. Method and installation for detecting and monitoring the depth of cracks in components in use, in particular cracks in wheel hubs. b. Detection method for components in use, which method is characterised in that a reference component 10 is made, a slit F1, F2, of different depths is machined and this reference component is analysed using ultrasound, then the component to be monitored is analysed using ultrasound and the signal obtained is compared with the various analysis signals from the reference component in order to determine the depth of the crack. c. The invention applies in particular to the monitoring of cracks in wheel hubs or the like. <IMAGE>
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