Method and apparatus for ultrasonically inspecting the surface of the bore of a railroad wheel axle
US5503019A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1992 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Jun 29, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2638
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for ultrasonically inspecting the surface of a bore, particularly the bore of a railroad wheel axle, includes the step of generating a transverse ultrasonic wave from an emitter which interacts with the surface of the bore, and comparing the amplitude of the echoes obtained with values obtained from a calibration curve plotted for a bore having a standard defect which corresponds to the bore to be inspected so as to determine the existance of a defect when the amplitude of the echoes is greater than a specified fraction of the value indicated by the calibration curve. A corresponding device is provided for ultrasonically inspecting the surface of the bore of the railroad wheel axle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.