Low cycle fatigue damage counter
US4031366A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1975 |
| Grant date | Jun 21, 1977 |
| Priority date | — |
| Expiry date | Oct 30, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C3/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electrical input signal representative of the existing operating state of a rotating bladed disk or other rotating member is classified into one of a plurality of predetermined operating states and a sequence detector is employed for detecting the occurrence of one of a plurality of possible predetermined sequences of such operating states. Predetermined fixed damage coefficients are then correlated with respectively corresponding detected predetermined sequences of operating states and accumulated with other similarly selected damage coefficients so as to provide a cumulative indication of low cycle fatigue damage done to the rotating member over its past history of experienced operating state sequences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.