Autoradiography-based differential wear mapping
US8050489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2007 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Aug 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N23/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems for the differential wear mapping of the surface of an object are described. The process involves establishing a radioactive wearing surface on the object through surface layer activation (SLA) and/or radioactive ion implantation (RII) and imaging the wearing surface with conformal photographic or x-ray film to produce a first autoradiograph providing a baseline profile of the wearing surface. After subjecting the object to wear during testing the wearing surface is again imaged with conformal photographic or x-ray film to produce a second autoradiograph providing a worn profile. The first and second autoradiographs of the wearing surface are digitized and compared to produce a differential wear map of the surface of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.