Using PZT Sensors for Tank Health Monitoring and Propellant Mass Gauging

Abstract: The technology in the presentation utilizes a random white noise vibration source to drive a transducer which acts as an actuator with identical transducers used as sensors based on PZT materials. The sensors are recorded and used to produce Frequency Response Functions (FRF) which indicate unique stiffness and mass information for tanks (or other structures) near real-time. The data also shows the level of the fluid with amplitude variations based on the change in vibration transmission coupling as the fluid transverses the inside tank opposite the transducers. All transducers are non-invasive, applied to a tank with adhesive allowing for measurements of many fluids including cryogenic and toxic fluids used on space vehicles. This presentation will describe the unique technology and propellant tank test results including low gravity sub-orbital flights.

Rudolph Werlink

4/18/2023 6:00:00 PM