Method for determining a parameter characteristic of the fatigue state of a part
US7712376B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2005 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Sep 27, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0244
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for determining an approximate value for a parameter characteristic of the fatigue state of a component as a result of a time-varying stress to which it is subjected by means of a number of load cycles should, itself, during comparatively lengthy stress cycles, enable a prognosis concerning the current fatigue state of the component, this prognosis being, in particular, adapted to the needs and suited for the real-time determination of maintenance intervals. To this end, in addition to optionally already fully completed load cycles, a first partially completed load cycle is also taken into consideration during the determination of the parameter, whereby temporary stress values for phases that have not yet been run through of the partially completed load cycle are, together with a predetermined fixed value, taken into consideration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.