Skip to main content
Log in

Determination of moisture effects on impact properties of composite materials

  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

Many applications of structural materials involving composites include impact or dynamic loading in a humid environment. Composite materials are known to degrade when subjected to humid conditions, and therefore the humidity confounds the difficulty of determining the high strain rate behavior of composites. Several researchers have found that water absorption by composites causes degradation of matrix dominated quasi-static properties. However, very little is known of the effect of absorbed moisture on the high strain rate properties of polymer matrix composites, that are useful in the automotive, aerospace, and naval applications of composite structures. A Split-Hopkinson Pressure Bar facility is used herein to study the effect of absorbed moisture in high strain rate tests (200–1200/s) of a unidirectional IM7/8551-7 graphite/epoxy composite. The study includes dry, medium, and saturated moisture conditions. The tests show significant variation of high strain rate properties from static properties, and the reasons are identified. In addition, a better understanding of the effect of the matrix and fiber/matrix interface on the high strain rate properties of composites is achieved.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. H. KOLSKY, Proc. Phys. Soc. B 62 (1949) 676.

    Google Scholar 

  2. T. NICHOLAS, Exp. Mech. 21 (1971) 177.

    Google Scholar 

  3. J. DUFFY, J. D. CAMPBELL and R. H. HAWLEY, J. Appl. Mech. 38 (1971) 83.

    Google Scholar 

  4. J. ZUKAS (ed.), “Impact Dynamics” (John Wiley and Sons, New York, 1982).

    Google Scholar 

  5. B. M. POWERS, J. R. VINSON, I. W. HALL and R. F. HUBBARD, AIAA Journal 35 (1997) 553.

    Google Scholar 

  6. E. PREISSNER, E. WOLDESENBET and J. R. VINSON, in Proceedings of 38th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, 1997, Kissimee, FL, p. 935.

  7. E. WOLDESENBET and J. R. VINSON, AIAA J. 37 (1999) 1102.

    Google Scholar 

  8. A. J. BARKER and V. BALASUNDARAM, Composites 18 (1987) 217.

    Google Scholar 

  9. C. H. SHEN and G. S. SPRINGER, in “Environmental Effects on Composite Materials” (Technomic Pub. Co., Lancaster, PA, 1981) p. 79.

    Google Scholar 

  10. E. M. SILVERMAN, C. R. WIACEK and R. A. GRIESE, in “Composite Materials: Testing and Design, ASTM STP 1120” (American Society for Testing and Materials, West Conshohocken, PA, 1992) Vol. 10, p. 118.

    Google Scholar 

  11. E. WOLDESENBET, “High Strain Rate Properties of Composites”, Ph.D. Dissertation (Department of Mechanical Engineering, University of Delaware, 1998) p. 111.

  12. G. H. STAAB and A. GILAT, J. Composite Mater. 29 (1995) 1308.

    Google Scholar 

  13. E. WOLDESENBET and J. R. VINSON, ibid. 35(6) (2001) 509.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to E. Woldesenbet.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Woldesenbet, E., Gupta, N. & Vinson, J.R. Determination of moisture effects on impact properties of composite materials. Journal of Materials Science 37, 2693–2698 (2002). https://doi.org/10.1023/A:1015864932198

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1015864932198

Keywords

Navigation