Fiber-optic epoxy composite cure sensor. II. Performance characteristics

Fiber-optic epoxy composite cure sensor. II. Performance characteristics

The performance of a fiber-optic epoxy composite cure sensor, as previously proposed, depends on the optical properties and the reaction kinetics of the epoxy. The reaction kinetics of a typical epoxy system are presented. It is a third-order autocatalytic reaction with a peak observed in each isoth...

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Veröffentlicht in:Applied Optics 1995-09, Vol.34 (25), p.5639-5644
Hauptverfasser: Lam, K Y, Afromowitz, M A
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container_title Applied Optics
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creator Lam, K Y
Afromowitz, M A
description The performance of a fiber-optic epoxy composite cure sensor, as previously proposed, depends on the optical properties and the reaction kinetics of the epoxy. The reaction kinetics of a typical epoxy system are presented. It is a third-order autocatalytic reaction with a peak observed in each isothermal reaction-rate curve. A model is derived to describe the performance characteristics of the epoxy cure sensor. If a composite coupon is cured at an isothermal temperature, the sensor signal can be used to predict the time when the gel point occurs and to monitor the cure process. The sensor is also shown to perform well in nonstoichiometric epoxy matrices. In addition the sensor can detect the end of the cure without calibration.
doi_str_mv 10.1364/AO.34.005639
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source Alma/SFX Local Collection; Optica Publishing Group Journals
title Fiber-optic epoxy composite cure sensor. II. Performance characteristics
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