Evaluation of Mechanical Properties of Carbon/Epoxy Composites Under In situ Low- and High-Temperature Environments

저온과 고온 환경 하에서 카본/에폭시 복합재의 기계적 물성 평가

  • Im, JaeMoon (Graduate School of Mechanical Design Engineering, Hanbat Nat'l Univ.) ;
  • Shin, KwangBok (Dept. of Mechanical Engineering, Hanbat Nat'l Univ.) ;
  • Hwang, Taekyung (Agency for Defense Development)
  • Received : 2014.12.22
  • Accepted : 2015.04.01
  • Published : 2015.06.01


This paper aims to evaluate the variation in the mechanical properties of carbon/epoxy composites under in situ low- and high-temperature environments. In situ low- and high-temperature environments were simulated with temperature ranging from $-40^{\circ}C$ to $220^{\circ}C$ using an environmental chamber and furnace. The variation in the mechanical properties of the composites was measured for longitudinal and transverse tensile properties, in-plane shear properties and interlaminar shear strength. Under the low temperature of $-40^{\circ}C$, all mechanical properties increased moderately compared to the baseline properties measured at room temperature. The changes in the longitudinal tensile properties decreased moderately with increasing temperature. However, transverse tensile properties, in-plane shear properties and interlaminar shear strength each showed a significant drop due to the glass transition behavior of the matrix after $140^{\circ}C$. Notably, the tensile property value near $100^{\circ}C$ increased compared to baseline property value, which was an unusual occurrence. This behavior was a direct result of post-curing of the epoxy resin due to its exposure to high temperature.


Carbon/Epoxy Laminate Composite;Low and High Temperature Environments;Mechanical Property


  1. Oh, J. O., Yoon, S. H., Lee, S. W., Ahn, C. W. and Hwang, T. K., 2012, "Prediction of High Temperature Tensile Strengths for Carbon Fiber/Epoxy Composite," Fall Conference of The Korean Society of Propulsion Engineers, pp. 665-667.
  2. Song, M. G., Kweon, J. H., Choi, J. H., Kim, H. J., Song, M. H., Shin, S. J. and Byun, J. H., 2010, "Hygrothermal Effect on the Strength of Carbon/Epoxy Composite Single-Lap Bonded Joints," The Korean Society for Aeronautical & Space Sciences, Vol. 38, No. 2, pp. 119-128.
  3. Kil, H. B. and Yoon, S. H., 2012, "Test Method for Composites Material Properties under High Temperature(I)," Spring Conference of The Korean Society of Propulsion Engineers, pp. 259-261.
  4. Yang, I. Y. and Park, C. S., 1994, "A Study on the Impact Damage and Residual Bending Strength of CF/EPOXY Composite Laminate Plates under High Temperature," Trans. Korean Soc. Mech. Eng., Vol. 18, No. 8, pp. 1930-1938.
  5. Cavdar, A., 2012, "A Study on the Effects of High Temperature on Mechanical Properties of Fiber Reinforced Cementitious Composites," Composites: Part B, Vol. 43, pp. 2452-2463.
  6. Gibson, A. G., Otheguy Torres, M. E., Browne, T. N. A., Feih, S. and Mouritz, A. P., 2010, "High Temperature and Fire Behaviour of Continuous Glass Fibre/Polypropylene Laminates," Composites : Part A, Vol. 41, pp. 1219-1231.
  7. Hinz, S., Omoori, T., Hoio, M. and Schulte, K., 2009, "Damage Characterisation of Fiber Metal Laminates under Interlaminar Shear Load," Composites: Part A, Vol. 40, pp. 925-931.
  8. Ogihara, S., Takeda, N., Kobayashi, S. and Kobayashi, A., 1999, "Effects of Stacking Sequence on Microscopic Fatigue Damage Development in Quasi-Isotropic CFRP Laminates with Interlaminar-Toughened Layers," Composite Science and Technology, Vol. 59, pp. 1387-1398.
  9. Buxton, A. and Baillie, C., 1994, " A Study of the Influence of the Environment on the Measurement of Interfacial Properties of Carbon Fiber/Epoxy Resin Composites," Composites, Vol. 25, No. 7, pp. 604-608.
  10. Huh, Y. H., Kim, J. I., Kim, D. J. and Lee, G. C., 2012, "Temperature-Dependency of Tensile Properties of GFRP Composite for Wind Turbine Blades," Trans. Korean Soc. Mech. Eng. A, Vol. 36, No. 9, pp. 1053-1057.
  11. Hwang, T. K., Park, J. B., Lee, S. Y., Kim, H. G., Park, B. Y. and Doh, Y. D., 2005, "Evaluation of Thermal Degradation of CFRP Flexural Strength at Elevated Temperature," Journal of the Korean Society for Composite Materials, Vol. 18, No. 2, pp. 20-29.
  12. ASTM International, 2000, "Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials," ASTM D3039.
  13. ASTM International, 2000, "Standard Test Method for Short-Beam Strength of Polymer Matrix Composite Materials and Their Laminates," ASTM D2344.
  14. ASTM International, 2001, "Standard Test Method for In-Plane Shear Response of Polymer Matrix Composite Materials by Tensile Test of a ${\pm}45^{\circ}$ Laminates," ASTM D3518.
  15. Kim, D. J., Choi, N. S. and Yun, Y. J., 2007, "Degradation Characteristics of Filament-Winding-Laminated Composites Under Accelerated Environmental Test," Trans. Korean Soc. Mech. Eng. A, Vol. 31, No. 3, pp. 295-303.

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