Some Observations on the Interlaminar Strength of Composite Laminates

  • N. J. Pagano
  • R. Byron Pipes
Part of the Solid Mechanics and Its Applications book series (SMIA, volume 34)


Definition of the influence of interlaminar stresses on the failure characteristics of composite laminates may require the development of novel experimental characterization procedures. The so-called free edge problem in laminate elasticity offers a cnovenient mechanism to accomplish this purpose because of the high interlaminar stresses in the neighbourhood of a free boundary. The detailed design of a laminate specimen which can exhibit catastrophic delamination induced by interlaminar tension is presented, along with a preliminary failure hypothesis to characterize this mode of rupture and the associated experimental demonstration of the phenomena.


Free Edge Ultimate Failure Laminate Thickness Free Body Diagram Interlaminar Stress 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    A. H. Purro and H. A. Evensen, J. Comp. Mat. 4, 204 (1970).CrossRefGoogle Scholar
  2. 2.
    R. Byron Pipes and N. J. Pagano, J. Comp. Mat. 4, 538 (1970).Google Scholar
  3. 3.
    N. J. Pagano and R. Byron Pipes, J. Comp. Mat. 5, 50 (1971).CrossRefGoogle Scholar
  4. 4.
    E. F. Rybicki, J. Comp. Mat. 5, 354 (1971).CrossRefGoogle Scholar
  5. 5.
    R. Byron Pipes, Ph.D. dissertation, University of Texas, Arlington, March (1972).Google Scholar
  6. 6.
    R. Byron Pipes, B. E. Kaminski and N. J. Pagano, ASTMSTP 521 (to be published).Google Scholar
  7. 7.
    Y. Stavsky, Proc. Am. Soc. Civil Engrs, J. Engr. Mech. Div. 87, 31 (1961).Google Scholar
  8. 8.
    S. B. Dong, K. S. Pister and R. L. Taylor, J. Aerospace Sci. 29, 969 (1962).zbMATHGoogle Scholar
  9. 9.
    N. J. Pagano, in Micromechanics (edited by G. P. Sendeckyj). Academic Press, New York (to be published).Google Scholar
  10. 10.
    J. M. Whitney and C. E. Browning, J. Comp. Mat. 6, 300 (1972).CrossRefGoogle Scholar
  11. 11.
    S. W. Tsai and N. J. Pagano, in Composite Materials Workshop (edited by S. W. TSAI, J. C HALPIN and N. J. PAGANO ), p. 233. Technomic, Stamford, Conn. (1967).Google Scholar
  12. 12.
    R. F. S. Hearmon, Applied Anisotropie Elasticity, p. 7. Oxford University Press, London (1961).Google Scholar
  13. 13.
    D. B. BOGY, J. appl. Mech. 35, 460 (1968).zbMATHCrossRefGoogle Scholar
  14. 14.
    M. S. Hess, J. Comp. Mat. 3, 262 (1969).Google Scholar
  15. 15.
    M. E. Waddoups, J. R. Eisenmann and B. E. Kamrnshi, J. Comp. Mat. 5, 446 (1971).CrossRefGoogle Scholar
  16. 16.
    K. Lauraitis, UILU-ENG 71–6009, T. and A. M. Report No. 345, University of Illinois (1971).Google Scholar
  17. 17.
    M. E. Waddoups, in Composite Materials Workshop (edited by S. W. Tsai, J. C. Halpin and N. J. Pagano ), p. 254. Technomic, Stamford, Conn. (1967).Google Scholar
  18. 18.
    P. H. Petit and M. E. Waddoups, J. Comp. Mat. 3, 2 (1969).CrossRefGoogle Scholar
  19. 19.
    J. M. Whitney, C. E. Browning and G. C. Grimes, Sixth St. Louis Symp. Composite Materials in Engineering Design,St. Louis, Mo., May 1972 (to be published).Google Scholar
  20. 20.
    N. J. Pagano and R. Kuhbander (to be published).Google Scholar
  21. 21.
    J. M. Whitney, Astm Stp 521 (to be published).Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1994

Authors and Affiliations

  • N. J. Pagano
    • 1
  • R. Byron Pipes
    • 2
  1. 1.Air Force Materials LaboratoryWright-Patterson Air Force BaseUSA
  2. 2.Drexel UniversityPhiladelphiaUSA

Personalised recommendations