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The Effect of the Fiber Volume Fraction Non-uniformity and Resin Rich Layer on the Rib Stiffness Behavior of Composite Lattice Structures

섬유체적비 불균일 및 수지응집층이 복합재 격자 구조체 리브의 강성도 거동에 미치는 영향

  • Kang, Min-Song (Department of Aerospace Engineering, Chung-Nam National University) ;
  • Jeon, Min-Hyeok (Department of Aerospace Engineering, Chung-Nam National University) ;
  • Kim, In-Gul (Department of Aerospace Engineering, Chung-Nam National University) ;
  • Kim, Mun-Guk (Department of Aerospace Engineering, Chung-Nam National University) ;
  • Go, Eun-Su (Department of Aerospace Engineering, Chung-Nam National University) ;
  • Lee, Sang-Woo (Defense and Aerospace Division, Hankuk Fiber Group)
  • Received : 2018.04.13
  • Accepted : 2018.08.27
  • Published : 2018.08.31

Abstract

Cylindrical composite lattice structures are manufactured by filament winding process. The fiber volume fraction non-uniformity and resin rich layers that can occur in the manufacturing process affect the stiffness and strength of the structure. Through the cross-section examination of the hoop and helical ribs, which are major elements of the composite lattice structure, we observed the fiber volume fraction non-uniformity and resin rich layers. Based on the results of the cross-section examination, the stiffness of the ribs was analyzed through the experimental and theoretical approaches. The results show that the fiber volume fraction non-uniformity and resin rich layers have an obvious influence on the rib stiffness of composite lattice structure.

Acknowledgement

Supported by : 민군협력진흥원(ICMTC)

References

  1. Cann, M.T., and Adams, D.O., "Characterization of Fiber Volume Fraction Gradients in Composite Laminates", Journal of Composite Materials, Vol. 42, No. 5, 2008, pp. 447-466. https://doi.org/10.1177/0021998307086206
  2. Zemcik, R., Srbova, H., Ekstein, K., Pirner, I., and Medlin, R., "Analysis of the Fiber Distribution, Size, and Volume Ratio of Unidirectional Composite Plates with Different Thicknesses", Materiali in Tehnologije / Materials and Technology, Vol. 51, No. 1, Feb. 2017, pp. 59-64. https://doi.org/10.17222/mit.2015.195
  3. ASTM D2584, Standard Test Method for Ignition Loss of Cured Reinforced Resins.
  4. ASTM D7264, Standard Test Method for Flexural Properties of Polymer Matrix Composite Materials.
  5. Jeon, M.H., Kang, M.S., Kim, I.G., Kim, M.G., Go, E.S., and Lee, S.W., "Compression and Bending Test for the Stiffness of Composite Lattice Subelement", Composites Research, Vol. 30, No. 6, 2017, pp. 331-337. https://doi.org/10.7234/COMPOSRES.2017.30.6.331
  6. Ugural, A.C., and Fenster, S.K., Advanced Mechanics of Materials and Applid Elasticity, Pearson Education, 2011.
  7. Whitney, J.M., Structural Analysis of Laminated Anisotropic Plates, 1987.
  8. Vasiliev, V.V., Barynin, V.A., and Rasin, A.F., "Anisogrid Lattice Structures - Survey of Development and Application", Composite Structures, Vol. 54, 2001, pp. 361-370. https://doi.org/10.1016/S0263-8223(01)00111-8
  9. Terashima, K., Kamita, T., Kimura, G., Uzawa, T., Aoki, T., and Yokozeki, T., "Experimental and Analytical Study of Composite Lattice Structure for Future Japanese Launchers", The 19th International Conference on Composite Materials, 2013, pp. 5373-5382.