Wireless Strain Gage

Period of Performance: 08/01/2005 - 05/01/2006


Phase 1 STTR

Recipient Firm

Syntonics LLC
9160 Red Branch Road Array
Columbia, MD 21045
Principal Investigator
Firm POC

Research Institution

ElectroScience Lab/Ohio State U.
1320 Kinnear Road
Columbus, MD 43212
Institution POC


The Air Force wants to develop strain sensors that can be installed inside rotating machinery to wirelessly transmit high speed, high resolution strain data to a stationary receiving system. The goal is 100 sensors transmitting 45 kHz strain data with 1 Hz resolution from within the first three stages of a jet turbine engine's compressor. Our Team believes that a combination of microwave techniques, innovative power/instrumentation/antenna designs, and existing thin-film technologies can achieve these goals. Using an existing turbine engine test bed, our Phase I work will demonstrate the feasibilty of communicating one channel of high speed data from a rotating third-stage compressor blade. In Phase II, we will extend the demonstration to multiple strain sensors that are wirelessly delivering high speed, high resolution data from an operating jet engine.