Embedded wireless and passive sensor
US11002637B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2018 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Aug 2, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/80
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wear monitoring system for measuring incursion depth into an abradable coating includes a layer of abradable coating including a depth, and a measurement circuit including a plurality of conductive leads disposed within the abradable coating. The conductive leads are spaced radially apart within a common radial plane corresponding to the depth of the abradable coating. A radio frequency identification tag (RFID) is disposed within the abradable coating and connected to the measurement circuit. A plurality of resistor elements corresponds with the plurality of conductive leads. Each of the plurality of resistor elements in electrical communication with one of the plurality of conductive leads is disposed within the common radial plane of the corresponding one of the plurality of conductive leads. An electrical characteristic of the measurement circuit varies responsive to cutting of one or more of the plurality of conductive leads by a passing airfoil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.