Method for detecting a critical defect in a ceramic rolling element
US11650170B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 3, 2021 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Aug 6, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/6466
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method for detecting at least one critical defect in a ceramic rolling element providing the steps of capturing a plurality of two-dimensional digital radiographic images of the ceramic rolling element; digitally filtering each radiographic image; delineating, on the basis of the filtered image, at least one region liable to comprise the critical defect; constructing stereoscopically a virtual model of the ceramic rolling element having the region; comparing the dimensions of the delineated region with a plurality of predetermined threshold values, and, when the dimensions are greater than the threshold values, generating an alarm signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.