FIBEROPTIC EPOXY COMPOSITE CURE SENSOR .2. PERFORMANCE-CHARACTERISTICS

被引:21
作者
LAM, KY [1 ]
AFROMOWITZ, MA [1 ]
机构
[1] UNIV WASHINGTON,DEPT ELECT ENGN,SEATTLE,WA 98195
来源
APPLIED OPTICS | 1995年 / 34卷 / 25期
关键词
D O I
10.1364/AO.34.005639
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
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.
引用
收藏
页码:5639 / 5644
页数:6
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