Non-isothermal monitoring of strain build-up in thermoset processing by a single chirped fiber Bragg grating

Michele Giordano; J. Nasser; Armando Laudati; Patrizio Capoluongo; Andrea Cusano

doi:10.1117/12.566537

9 June 2004 Non-isothermal monitoring of strain build-up in thermoset processing by a single chirped fiber Bragg grating

Michele Giordano, J. Nasser, Armando Laudati, Patrizio Capoluongo, Andrea Cusano

Author Affiliations +

Proceedings Volume 5502, Second European Workshop on Optical Fibre Sensors; (2004) https://doi.org/10.1117/12.566537
Event: Second European Workshop on Optical Fibre Sensors, 2004, Santander, Spain

Abstract

A partially embedded chirped fiber Bragg grating has been used to monitor the strain build up during non isothermal curing of a model thermoset resin. The particular feature of the spectra of a linearly chirped and strongly apodized fiber Bragg grating to encode position along the sensor has been used to simultaneously measure temperature and strain during the cure cycle of an epoxy based polymer. In particular, the embedded part of the grating allows the monitoring of temperature and processing strain while the rest of the sensor is sensible to temperature variation only. A new self temperature referenced sensor system has been successfully tested in an operative condition where usually thermomechanical loading are simultaneously active. The onset and progression of gelification as well as the temperature have been measured.

Citation Download Citation

Michele Giordano, J. Nasser, Armando Laudati, Patrizio Capoluongo, and Andrea Cusano "Non-isothermal monitoring of strain build-up in thermoset processing by a single chirped fiber Bragg grating", Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); https://doi.org/10.1117/12.566537

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