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Photonic Integrated Circuit Based Temperature Sensor forOut-of-Autoclave Composite Parts Production Monitoring.
Georgios Syriopoulos1, Ioannis Poulopoulos1, Charalampos Zervos1
1Photonics Communications Research Laboratory, National Technical University of Athens, 9 Iroon Polytechniou Street, Zografou, 15773 Athens, Greece.
Sensors (Basel, Switzerland)
|September 28, 2023
Summary
This study introduces a novel silicon photonics temperature sensor for optimizing composite material production in the aerospace industry. The passive optical sensor ensures high reliability and cost-effectiveness in out-of-autoclave processes.
Area of Science:
- Materials Science
- Photonics
- Aerospace Engineering
Background:
- Composite materials offer excellent mechanical properties for aerospace applications.
- Out-of-autoclave production requires optimized monitoring and control for reliability and cost-efficiency.
- Photonic Integrated Circuits (PICs), specifically Silicon Photonics, present a promising sensing solution due to their unique characteristics.
Purpose of the Study:
- To demonstrate a passive optical temperature sensor for monitoring composite material production.
- To validate the sensor's performance within a composite tool during the RTM-6 process.
- To showcase the applicability of Silicon Photonics in advanced manufacturing.
Main Methods:
- Development of a passive optical temperature sensor on a Silicon-on-Insulator platform.
- Integration of the sensor into a composite tool for RTM-6 part production.
- Experimental thermal cycling and comparison with industry-standard thermocouples.
Main Results:
- The optical sensor achieved high sensitivity (85 pm/°C) and linearity (R² = 0.944).
- The sensor demonstrated compatibility with the RTM-6 composite production process.
- Successful operation of the sensor was confirmed up to 180 °C.
Conclusions:
- Silicon Photonics offers a viable sensing technology for optimizing composite manufacturing processes.
- The developed optical sensor meets the demanding requirements of aerospace composite production.
- This technology contributes to enhanced reliability, reduced costs, and improved production speeds.
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