Method for preventing shattered-rim fracture in railway wheels
US6357297B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2000 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Jun 1, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2696
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for easily and effectively preventing shattered-rim fracture in a railway wheel. Generally, the method comprises the steps of providing a railway wheel, measuring the maximum defect size within the rim of the railway wheel, and determining whether the maximum defect size is less than a predetermined maximum permissible defect size, the maximum permissible defect size being determined based on an analysis of the likelihood of Mode II crack propagation from the defect when the railway wheel has been subjected to the load. The disclosed invention also encompasses a method for grading railway wheels for maximum load suitability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.