Method and apparatus for conducting structural health monitoring in a cryogenic, high vibration environment
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United States of America Patent
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Jan 8, 2013
Grant Date -
Sep 3, 2009
app pub date -
Jan 22, 2009
filing date -
Jan 22, 2008
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Abstract
Sensors affixed to various such structures, where the sensors can withstand, remain affixed, and operate while undergoing both cryogenic temperatures and high vibrations. In particular, piezoelectric single crystal transducers are utilized, and these sensors are coupled to the structure via a low temperature, heat cured epoxy. This allows the transducers to monitor the structure while the engine is operating, even despite the harsh operating conditions. Aspects of the invention thus allow for real time monitoring and analysis of structures that operate in conditions that previously did not permit such analysis. A further aspect of the invention relates to use of piezoelectric single crystal transducers. In particular, use of such transducers allows the same elements to be used as both sensors and actuators.
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