Resin Directional Flow and Degree of Cure Sensing Using Chirped Optical Fiber Long Period Gratings

被引：6
|
作者：
Wong, Rebecca Y. N. [1 ,2 ]
Chehura, Edmon [1 ]
James, Stephen W. [1 ]
Tatam, Ralph P. [1 ]
机构：
[1] Cranfield Univ, Engn Photon, Cranfield MK43 0AL, Beds, England
[2] Inst Infocomm Res, Smart Energy & Environm Cluster, Singapore 138632, Singapore
来源：
IEEE SENSORS JOURNAL | 2017年 / 17卷 / 20期
基金：
英国工程与自然科学研究理事会;
关键词：
Fiber optics; optical fiber sensor; long period grating; chirped grating; directional flow; resin cure; Fresnel sensor; STRAIN DEVELOPMENT; REFRACTIVE-INDEX; EPOXY-RESIN; SENSORS; COMPOSITES;
D O I：
10.1109/JSEN.2017.2739422
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The use of chirped long period gratings (CLPGs) for monitoring the flow, the direction of the flow, and the subsequent cure of an epoxy resin is presented. The asymmetric properties of the CLPG and its sensitivity to refractive index changes were exploited to facilitate the measurement of the direction of the flow. The performances of a continuously chirped LPG (CCLPG) and a step chirped LPG (SCLPG) were compared, with the CCLPG showing improved spatial resolution. The CCLPG and SCLPG were also used to monitor changes in the refractive index of the resin during cure, with the results showing close agreement with measurements undertaken simultaneously using a fiber optic Fresnel refractometer.
引用
收藏
页码：6605 / 6614
页数：10
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