Non-contact dynamic strain field measuring method and system for rotating blade
US12007309B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2021 |
| Grant date | Jun 11, 2024 |
| Priority date | — |
| Expiry date | Mar 20, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/23
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention discloses a non-contact dynamic strain field measuring method and system for a rotating blade. The method includes the following steps: establishing a three-dimensional finite element model of a to-be-measured rotating blade, and extracting modal parameters of the three-dimensional finite element model; determining the number and axial mounting positions of blade tip timing sensors; constructing a conversion matrix of finite measuring point displacement and an overall strain field; and acquiring blade tip finite position displacement of the rotating blade based on the blade tip timing sensors, and acquiring, by a dynamic strain, dynamic strains of the rotating blade at any moment, on any position and in any direction based on modal processing of the conversion matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.