Constructing of cure monitoring system with piezoelectric ceramics for composite laminate

Nobuo Oshima; Kouichi Inoue; Shinya Motogi; Takehito Fukuda

doi:10.1117/12.483451

5 August 2003 Constructing of cure monitoring system with piezoelectric ceramics for composite laminate

Nobuo Oshima, Kouichi Inoue, Shinya Motogi, Takehito Fukuda

Proceedings Volume 5056, Smart Structures and Materials 2003: Smart Structures and Integrated Systems; (2003) https://doi.org/10.1117/12.483451
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

The cure monitoring system with piezoelectric ceramics is constructed. An embedded type piezoelectric ceramics sensor with flat lead wires is developed. And the piezoelectric ceramics is embedded into composite laminate. A dummy piezoelectric ceramics is set in the autoclave oven. The impedance of the piezoelectric ceramics which is embedded in the composite laminate and that of the dummy piezoelectric ceramics are measured by a LCR meter. The piezoelectric ceramics have strong temperature dependency. The temperature dependency of the impedance of piezoelectric ceramics is corrected by the information from the dummy piezoelectric ceramics. A dielectric sensor is also embedded in the composite laminate as a reference sensor for the degree of cure. The change in calculated cure index shows good correspondence with change in the log ion viscosity which is measured by the dielectric cure monitoring sensor.

Citation Download Citation

Nobuo Oshima, Kouichi Inoue, Shinya Motogi, and Takehito Fukuda "Constructing of cure monitoring system with piezoelectric ceramics for composite laminate", Proc. SPIE 5056, Smart Structures and Materials 2003: Smart Structures and Integrated Systems, (5 August 2003); https://doi.org/10.1117/12.483451

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