International Journal of Fracture

, Volume 100, Issue 3, pp 275–306

Compressive response and failure of fiber reinforced unidirectional composites

  • S.H. Lee
  • Anthony M. Waas


The compressive response of polymer matrix fiber reinforced unidirectional composites (PMC's) is investigated via a combination of experiment and analysis. The study accounts for the nonlinear constitutive response of the polymer matrix material and examines the effect of fiber geometric imperfections, fiber mechanical properties and fiber volume fraction on the measured compressive strength and compressive failure mechanism.Glass and carbon fiber reinforced unidirectional composite specimens are manufactured in-house with fiber volume fractions ranging over 10∼60 percent. Compression test results with these specimens show that carbon fiber composites have lower compressive strengths than glass fiber composites. Glass fiber composites demonstrate a splitting failure mode for a range of low fiber volume fractions and a simultaneous splitting/kink banding failure mode for high fiber volume fractions. Carbon fiber composites show kink banding throughout the range of fiber volume fractions examined. Nonlinear material properties of the matrix, orthotropic material properties of the carbon fiber, initial geometric fiber imperfections and nonuniform fiber volume fraction are all included in an appropriate finite element analysis to explain some of the observed experimental results. A new analytical model predictionof the splitting failure mode shows that this failure mode is favorable for glass fiber composites, which is in agreement with test results. Furthermore, this modelis able to show the influence of fiber mechanical properties, fiber volume fraction and fiber geometry on the splitting failure mode.

Kink banding splitting compression strength fracture. 


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  1. Ashby, M.F. (1992). Engineering Materials I: An Introduction to their Properties and Applications, Pergamon Press, New York.Google Scholar
  2. Budiansky, B. and Fleck, N.A. (1993). Compressive failure of fiber composites. Journal of the Mechanics and Physics of Solids 41, 183-211.Google Scholar
  3. Camponeschi, E.T. Jr. (1991b). Compression of composite materials: A review. Composite Materials: Fatigue and Fracture (Third Volume) (Edited by T.K. O'Brien), ASTM STP 1110, American Society for Testing and Materials, Philadelphia, 550-578.Google Scholar
  4. Chatterjee, S., Adams, D. and Oplinger, D.W. (1993). Test methods for composites a status report, Volume II. Compression Test Methods. U.S. Department of Transportation, Federal Aviation Administration Report DOT/FAA/CT-93/17.Google Scholar
  5. Cherepanov, G.P. (1979). Mechanics of Brittle Fracture, McGraw-Hill, 688-692.Google Scholar
  6. Cui, W.C., Wisnom, M.R. and Jones, M. (1992). A comparison of failure criteria to predict delamination of unidirectional glass/epoxy specimens waisted through the thickness. Composites 23, 158-165.Google Scholar
  7. Daniel, Isaac M., Hao-Ming, H. and Shi-Chang, W. (1996). Failure mechanisms in thick composites under compression loading. Composites: Part B. Engineering 27, 543-552.Google Scholar
  8. Drapier, S., Grandidier, J.-C. and Poitier-Ferry, M. (1998). A nonlinear numerical approach to the analysis of microbuckling. Composites Science and Technology 58, 785-790.Google Scholar
  9. Fleck, N.A. Compressive Failure of Fiber Composites, Advances in Applied Mechanics, Academic Press, New York, 33, 43-117.Google Scholar
  10. Gibson, R.F. Principles of Composite Material Mechanics, McGraw-Hill, Inc.Google Scholar
  11. Guynn, E.G., Ochoa, O.O. and Bradley, W.L. (1992a). A parametric study of variables that affect fiber microbuckling initiation in composite laminates: Part 1 — Analyses. Journal of Composite Materials 26, 1594-1616.Google Scholar
  12. Guynn, E.G., Ochoa, O.O. and Bradley, W.L. (1992b). A parametric study of variables that affect fiber microbuckling initiation in composite laminates: Part 2 — Experiments. Journal of Composite Materials 26, 1617-1643.Google Scholar
  13. Hercules Advanced Materials and Systems Company, Product Data-Carbon Fiber Type IM7.Google Scholar
  14. Hsu, S.Y., Vogler, T.J. and Kyriakides, S. (1998). Compressive strength predictions for fiber composites. Journal of Applied Mechanics 65, 7-16.Google Scholar
  15. Jones, R.M. (1975). Mechanics of Composite Materials, Scripta Book Company, Washington, D.C.Google Scholar
  16. Kawabata, S. (1990). Measurement of the transverse mechanical properties of high-performance fibers. J. Text. Inst. 81(4), 432-447.Google Scholar
  17. Kumar, S. (1991). Advances in high performance fibers. Indian Journal of Fiber and Textile Research 16, 52-64.Google Scholar
  18. Kumar, S., Anderson, D.P. and Crasto, A.S. (1993). Carbon fiber compressive strength and its dependence on structure and morphology. Journal of Materials Science 28, 423-439.Google Scholar
  19. Kyriakides, S., Arseculeratne, R., Perry, E.J. and Liechti, K.M. (1995). On the compressive failure of fiber reinforced composites, Proceedings of the sixtieth birthday celebration of Prof. W.G. Knauss. International Journal of Solids and Structures 32(6/7), 689-738.Google Scholar
  20. Kyriakides, S. and Ruff, A.E. (1997). Aspects of the failure and postfailure of fiber composites in compression. Journal of Composite Materials 31(20), 2000-2037.Google Scholar
  21. Lee, S.H. (1998). Compressive Behavior of Fiber Reinforced Unidirectional Composites, PhD thesis, Department of Aerospace Engineering, University of Michigan, Ann Arbor.Google Scholar
  22. Lo, K.H. and Chim, E.S.-M. (1992). Compressive strength of unidirectional composites. Journal of Reinforced Plastics and Composites 11, 838-896.Google Scholar
  23. Lyon, Richard E. (1991). Shear strength of a ductile material from torsion of solid cylinders. Journal of Testing and Evaluation, 19(3), 240-243.Google Scholar
  24. Narayan, S. and Schadler, L. (1998). Private communication. Presentation at SES Meeting, September, Pullman, WA.Google Scholar
  25. Peebles, L.H. (1995). Carbon Fibers, CRC Press.Google Scholar
  26. Schapery, R.A. (1993). Compressive strength based on local buckling in viscoelastic composites. Proceedings of the Third Pan American Congress on Applied Mechanics, January.Google Scholar
  27. Schapery, R.A. (1995). Prediction of compressive strength and kink bands in composites using a work potential. International Journal of Solids and Structures 32(6/7), 739-765.Google Scholar
  28. Schoeppner, G.A. and Sierakowski, R.L. (1990). A review of compression test methods for organic matrix composites. Journal of Composites Technology and Research 12, 2-12.Google Scholar
  29. Shu, J.Y. and Fleck, N.A. (1997). Microbuckle initiation in fiber composites under multiaxial loading. Proceedings of the Royal Society of London, Series A 453, 2063-2083.Google Scholar
  30. Sohi, M.M., Hahn, H.T. and Williams, J.G. (1987). The Effect of Resin Toughness and Modulus on Compression Failure Modes of Quasi-Isotropic Graphite/Epoxy Laminates (Edited by N.J. Johnston), Toughened Composites, ASTM STP 937, American Society for Testing and Materials, Philadelphia, 37-60.Google Scholar
  31. Soutis, C., Fleck, N.A. and Smith, P.A. (1991). Failure prediction technique for compression loaded carbon fiber-epoxy laminate with open holes. Journal of Composite Materials 25, 1476-1498.Google Scholar
  32. Soutis, C., Berbinau, P., Goutas, P. and Curtis, P.T. (1998). Effect of off-axis ply orientation on 0° fiber microbuckling, submitted to Composites A.Google Scholar
  33. Sun, C.T. and Jun, A.W. (1994). Compressive strength of unidirectional fiber composites with matrix nonlinearity. Composites Science and Technology 52, 577-587.Google Scholar
  34. Swanson, S.R. (1992). A micromechanics model for in-situ compression strength of fiber composite laminates. Journal of Engineering Materials and Technology 114, 8-12.Google Scholar
  35. Waas, A.M., Babcock, C.D. Jr. and Knauss, W.G. (1990). An experimental study of compression failure of fibrous laminated composites in the presence of stress gradients. International Journal of Solids and Structures 26(9–10), 1071-1098.Google Scholar
  36. Waas, A.M. and Schultheisz, C.R. (1995). Compressive failure of composites, Parts I and II. Progress in Aerospace Sciences 32, 1-78.Google Scholar
  37. Warner, S.B. (1995). Fiber Science, Prentice Hall.Google Scholar

Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • S.H. Lee
    • 1
  • Anthony M. Waas
    • 1
  1. 1.Department of Aerospace EngineeringUniversity of MichiganAnn ArborU.S.A.

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