Transverse ply cracking of five toughened and untoughened graphite/epoxy and graphite/polycyanate laminates was studied using crossply laminates. Two different theoretical approaches, variational mechanics and resistance curves based on shearlag approximation, were used to analyze the data. Resistance of the laminates to transverse ply cracking was determined. Both theories show the same ranking of the laminates with respect to their resistance to microcracking. These results were compared with the critical strain energy release rate data obtained on the resins and the laminates.
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References
1.
1. Hahn, T. and N. J. Pagano.1975. J. Composite Materials, 9:91.
2.
2. Pagano, N. J. and H. T. Hahn.1977. Composite Materials: Testing and Design (Fourth Conference), ASTM STP617, p. 317.
3.
3. Doner, D. R. and R. C. Novak.1969. 24th Annual Technical Conference, The Society of Plastics Industry, Reinforced Plastics/Composites Division, Session 2-D.
4.
4. Wilson, D., J. K. Wells, J. N. Hay, D. Lind, G. A. Owens and F. Johnson.1987. SAMPE Journal, 23(3):35.
5.
5. Flaggs, D. L. and M. H. Kural.1982. J. Composite Materials, 16:103.
6.
6. Parvizi, A., K. W. Garrett and J. E. Bailey.1978. J. Materials Science, 13:195.
7.
7. Flaggs, D. L.1985. J. Composite Materials, 19:29.
8.
8. Han, Y. M. and H. T. Hahn.1987. “Ply Cracking in Termoplastic Composites,”interim report prepared for E. I. du Pont de Nemours & Co., Dept. of ESM, Pennsylvania State University.
9.
9. Highsmith, A. L. and K. L. Reifsnider.1982. Stiffness-Reduction Mechanisms in Composite Laminates, ASTM STP775, pp. 103–117.
10.
10. Groves, S. E., C. E. Harris, A. L. Highsmith, D. H. Allen and R. G. Norvell.1987. Exp. Mech., p. 73.
11.
11. Talreja, R.1985. J. Composite Materials, 19:355.
12.
12. Hashin, Z.1985. Mechanics of Materials, 4:121.
13.
13. Hashin, Z.1986. Eng. Fract. Mech., 25:771.
14.
14. Manders, P. W., T. W. Chou, F. R. Jones and J. W. Rock.1983. J. Materials Science, 18:2876.
15.
15. Fukunaga, H., T. W. Chou, P. W. M. Peters and K. Schulte.1984. J. Composite Materials, 18:339.
16.
16. Jones, F. R., A. R. Wheatley and J. E. Bailey.1981. Composite Structures, I. H. Marshall, ed., Barking, England: Applied Science Publishers, p. 415.
17.
17. Crossman, F. W. and A. S. D. Wang.1980. J. Composite Materials Supplement, 14:71.
18.
18. Crossman, F. W., W. J. Warren, A. S. D. Wang and G. E. Law, Jr.1980. J. Composite Materials Supplement, 14:88.
19.
19. Crossman, F. W. and A. S. D. Wang.1982. Damage in Composite Materials, ASTM STP 775, pp. 118–139.
20.
20. Wang, A. S. D., N. N. Kishore and W. W. Feng.1982. Proceedings of the ICCM-IV, p. 599.
21.
21. Chou, P. C., A. S. D. Wang and H. Miller.1982. “Cumulative Damage Models for Advanced Composite Materials,” AFWAL-TR-82-4083.
22.
22. Chou, P. C., A. S. D. Wang, C. S. Lei and R. B. Bucinell.1984. “Cumulative Damage Models for Advanced Composite Materials, Phase II,” AFWAL-TR-84-4004.
23.
23. Wang, A. S. D.1984. Comp. Tech. Rev., 6(2):45.
24.
24. Wang, A. S. D.1985. “Fracture Analysis of Matrix Cracking in Laminated Composites,” NADC-85118-60.
25.
25. Garrett, K. W. and J. E. Bailey.1877. J. Materials Science, 12:157.
26.
26. Dvorak, G. J. and N. Laws.1985. “Mechanics of First Ply Failure in Composite Laminates,”Fracture of Fibrous Composites, AMD-Vol. 74:59.
27.
27. Laws, N. and G. J. Dvorak.1985. Proc. IUTAM Eshelby Memorial Symp., Cambridge University Press, pp. 119–127.
28.
28. Dvorak, G. J., N. Laws and M. Hejazi.1985. J. Comp. Mater., 19:216.
29.
29. Dvorak, G. J. and N. Laws.1987. J. Comp. Mater., 21:309.
30.
30. Talreja, R.1987. Fatigue of Composite Materials.Lancaster, PA: Technomic Publishing Co., p. 83.
31.
31. Garrett, K. W. and J. E. Bailey.1877. J. Materials Science, 12:2189.
32.
32. Parvizi, A. and J. E. Bailey.1978. J. Materials Science, 13:2131.
33.
33. Bailey, J. E., P. T. Curtis and A. Parvizi.1979. Proc. Roy. Soc. London, A366:599.
34.
34. Han, Y. M., H. T. Hahn and R. B. Croman.1987. Proc. of the 2nd Technical Conference of the American Soc. for Composites, Newark, Delaware, September, 1987.
35.
35. Hahn, H. T., Y. M. Han and R. Y. Kim.1988. SAMPE International Symposium, 33:1101.
36.
36. Nairn, J. A.1989. J. Composite Materials, 23:1106.
37.
37. Nairn, J. A.1988. Proc. of the 3rd Technical Conference of the American Soc. for Composites, Seattle, Washington, September, 1988.
38.
38. Hahn, H. T. and T. Johannesson.Mechanics of Composite Materials, AMD-Vol. 58. New York: ASME, pp. 135–142.
39.
39. Liu, S. and J. A. Nairn. 1990. Submitted to J. Reinforced Plastics and Composites.
40.
40. Tsai, S. W. and H. T. Hahn.1980. Chapter 9 in Introduction to Composite Materials. Lancaster, PA: Technomic Publishing Co., Inc.
