Cure Monitoring of CFRP Composites using Embedded Optical Fibers

2018 ◽  
Author(s):  
Daniel A. Drake ◽  
Rani W. Sullivan ◽  
Jonathan Spowart
Keyword(s):  
Optical Fibers ◽  
Cure Monitoring ◽  
Cfrp Composites

Composite Cure Monitoring With Infrared Transmitting Optical Fibers

1989 ◽  
Author(s):  
Mark A. Druy ◽  
Lucy Elandjian ◽  
W. A. Stevenson
Keyword(s):  
Optical Fibers ◽  
Cure Monitoring

101 Health Monitoring of CFRP Composites Using Small-Diameter Optical Fibers

2000 ◽  
Vol 2000.6 (0) ◽  
pp. 1-2
Author(s):  
Tadahito MIZUTANI ◽  
Shigeki YASHIRO ◽  
Yoji OKABE ◽  
Nobuo TAKEDA
Keyword(s):  
Optical Fibers ◽  
Health Monitoring ◽  
Small Diameter ◽  
Cfrp Composites

Strain measurement and cure monitoring in thin plates of composite materials by using twisted optical fibers

1996 ◽  
Author(s):  
Huiwen Wang ◽  
Jan Wu ◽  
Naiji Li ◽  
Hongjun Cao ◽  
Di Dai ◽  
...  
Keyword(s):  
Composite Materials ◽  
Optical Fibers ◽  
Strain Measurement ◽  
Thin Plates ◽  
Cure Monitoring

1705 Cure Monitoring of Chain Curing Polymer Using Optical Fibers

2005 ◽  
Vol 2005.6 (0) ◽  
pp. 155-156
Author(s):  
Katsuhiko Osaka ◽  
Shinichi Takasaki ◽  
Tatsuro Kosaka ◽  
Yoshihiro Sawada
Keyword(s):  
Optical Fibers ◽  
Cure Monitoring

Luminance Change Method for Cure Monitoring of GFRP

2006 ◽  
Vol 321-323 ◽  
pp. 1316-1321 ◽  
Author(s):  
Akira Todoroki ◽  
Norihiko Hana ◽  
Masahito Ueda
Keyword(s):  
Optical Fibers ◽  
Polyester Resin ◽  
Low Cost ◽  
Electrical Circuit ◽  
Matrix Resin ◽  
Degree Of Cure ◽  
Luminance Change ◽  
Light Power ◽  
Cure Monitoring ◽  
Rtm Process

Resin transfer molding (RTM) process is getting popular for fabrications of complicated commercial products made from Glass Fiber Reinforced Polymer (GFRP) at low cost. Cure monitoring is indispensable for RTM process. In the present study, polyester resin is adopted for matrix resin of the GFRP components. The polyester is usually adopted as matrix resin of the low-cost GFRP products. Existing methods for the cure monitoring are, however, expensive for the GFRP products. The polyester resin usually changes its optical property during curing. This enables us to monitor the degree of cure by means of measurements of luminance change of the transmitted light. Since the electrical circuit for measuring luminance change is not expensive, this system utilizes the luminance change for monitoring cure is not expensive system. In the present study, the sensing system employs a LED as a light source and plastic optical fibers as light paths. A photodiode is adopted as a light power sensor. This low-cost cure-monitoring system is applied to monitoring of degree of cure of polyester resin. Degree of cure is measured by means of commercially available dielectric sensors, and results are compared with the results of luminance change. The effectiveness of the method is confirmed experimentally here.

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