Luminance Change Method for Cure Monitoring of GFRP

Akira Todoroki; Norihiko Hana; Masahito Ueda

doi:10.4028/www.scientific.net/KEM.321-323.1316

Paper Titles

Fast and Accurate Color Space Conversion Matrix
p.1297

Wavelet Based Multi-Bit Fingerprinting Against Geometric Distortions
p.1301

Optical Properties for ZnSe Epilayer Obtained From Photoluminescience Measurement
p.1306

Asymmetrical Dual Charge EPCM for Delamination Monitoring of CFRP Laminate
p.1309

Luminance Change Method for Cure Monitoring of GFRP
p.1316

Effect of SiO₂ Cap Layer on Thermal Stability of Nickel and Nickel-Cobalt Silicide
p.1322

Nondestructive Evaluation of Corrosion Progression on Titanium and Its Alloy Surface by Wetting Method
p.1326

Measurement of Carboxyl Group Separated from a Thin Film Copolymerized by Low-Temperature Plasma at Atmospheric Pressure of C₂H₂ and CO₂
p.1332

Synthesis and Characterization of Ce-Doped BZT Thin Films Deposited by a RF Magnetron Sputtering Method
p.1336

HomeKey Engineering MaterialsKey Engineering Materials Vols. 321-323Luminance Change Method for Cure Monitoring of...

Luminance Change Method for Cure Monitoring of GFRP

Abstract:

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.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 321-323)

Pages:

1316-1321

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.321-323.1316

Citation:

Cite this paper

Online since:

October 2006

Authors:

Akira Todoroki, Norihiko Hana, Masahito Ueda

Keywords:

Cure Monitoring, Glass Fiber Reinforced Polymer (GFRP), Transmitted Light

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] Huan Yang, L.J. Lee, J. App. Poly. Sci, Vol. 97 (2001), pp.1230-1242.

Google Scholar

[2] Bradley L. Grunden, Chong Sook Paik Sung, Macromolecul, Vol. 36 (2003), p.3166.

Google Scholar

[3] H.G. Kim and D.G. Lee, Compo. Struc, Vol. 57 (2002), p.91.

Google Scholar

[4] A. Todoroki, and Y. Shimamura, JSME. J, Vol. 1 (2000), p.43.

Google Scholar

[5] A. Todoroki, Y. Tanaka, and Y. Shimamura, Compo. Sci. Tech, Vol. 63 (2003), p.273.

Google Scholar

[6] Bang K. G, Kwon J. W, Lee D. G, Lee J. W, J. Mater. Process. Technol, Vol. 113 (2001), p.209.

Google Scholar

[7] Y. Yamamori, S. Shibahara, T. Nakao, 2005. Sumitomo Bakelite Co., Transparent FRP, #2005008721 (Patent, Japan).

Google Scholar

[8] S. Fujita, H. Tonotani, C. Urao, 2004. Dainippon Ink Chemicals, Corrugated Plate And Flat plate Of Unsaturated Polyester Resin, #2004083705 (Patent, Japan).

Google Scholar