System for structural health monitoring and/or non-invasive tank fluid level measurement including cryogenic and zero G environments
Number of patents in Portfolio can not be more than 2000
United States of America
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Feb 18, 2020
Grant Date -
Jan 4, 2018
app pub date -
Jul 13, 2017
filing date -
Jul 13, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system includes a first transducer configured as an actuator. The first transducer is in communication with a surface of a structure. A second transducer is configured as a sensor. The second transducer is in communication with the surface. A third transducer is configured as a sensor. The third transducer is in communication with the surface and separated from the second transduce by an area. A digitizing unit receives signals from the second transducer and the third transducer. The digitizing unit communicates a plurality of frequency signals for the first transducer. A computing unit communicates the plurality of frequency signals to the digitizing unit, receives digitized signals from the digitizing unit, and calculates a Frequency Response Function from the digitized signals. Changes to the Frequency Response Function indicate a change to physical properties of the structure.
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