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US 2006/0123914 A1Published application
System and method for monitoring the curing of composite materials
OwnerJulio Pena, Grzegorz Kawieckiinventors
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Abstract
Composite materials cure monitoring system and method based on the use of piezotransducers that can be activated by external signals and that, as a result of this activation, can generate elastic waves that can be detected by same, or distinct, piezotransducers distributed over the structure. The received signals are, then, processed by a dedicated acquisition and processing system with the objective to control the composite material cure process.
Claims16
A composite materials, resin or solid laminate, cure monitoring system comprising:
- A) an electric wave generation system capable of generating elastic waves;
- B) an elastic wave reception system capable of receiving elastic waves;
- C) a network of piezoelectric elements connected to previous systems, being the piezoelectric elements in direct contact with the composite material;
- D) a commutation equipment capable of selecting the adequate piezoelectric element to act as emitter or receiver.
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Composite materials cure monitoring method wherein;
- A) the distribution of the piezoelectric elements allows for measurements to be taken and it is coincident with a determinate direction based on fiber, if any, orientation.
- B) the piezoelectric material composition can withstand elevated temperature above composite material gelation point.
- C) the generated elastic waves are transmitted through the part to monitor.
- D) the impulsive-like signals and short duration constant frequency waveforms or chirps are generated through the electric signal generation system.
1 more element
Dependencies are inferred from the claim text.