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0021998306062319v1
40/24/2257    most recent
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This version was published on December 1, 2006
Journal of Composite Materials, Vol. 40, No. 24, 2257-2277 (2006)
DOI: 10.1177/0021998306062319

Numerical Simulation and Experimental Study on Consolidation of Toughened Epoxy Resin Composite Laminates

Yizhuo Gu

School of Materials Science & Engineering, 104 Staff Room, Beijing University of Aeronautics & Astronautics, 37 Xue Yuan Road, Haidian District Beijing 100083, PR China; benniegu{at}mse.buaa.edu.cn

Min Li

Zuoguang Zhang

Zhijie Sun

School of Materials Science & Engineering, 104 Staff Room, Beijing University of Aeronautics & Astronautics, 37 Xue Yuan Road, Haidian District Beijing 100083, PR China

Toughened epoxy resin is one of the most important matrices in composite structural materials. In this article a one-dimensional resin flow/fiber compaction model was used for analysis of the consolidation of a toughened epoxy resin 5228/T700S carbon fiber laminates. The laminate thickness and the fiber volume fraction distribution of cured laminates under different cure cycles were investigated both from the experimental measurements and from the numerical simulation. The calculated and experimental results are in good agreement for all the studied cases. A significantly uneven degree of consolidation along the laminate thickness direction is observed, and it is difficult to improve by altering cure cycle. These results are valuable for the study of the performance of composite parts, provided that uneven distribution of fibers does affect some properties of composite materials.

Key Words: composite laminate • numerical analysis • consolidation • epoxy resin


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