Abstract
Fracture surface energies of initiation (γ I c) for a transverse fracture process in glass-reinforced epoxy composites have been measured and the results calculated by three different treatments and are compared with the average fracture surface energies (γ F c) for the complete fracture process.
Changes in these two fracture properties are studied as a function of the volume fraction of the fibres, and the relation between the surface energies is established as a factor which determines the nature of the fracture process. When γ I{sic}−γ F c>0 a catastrophic failure is expected, whereas a controlled fracture is observed for γ I c−γ F c<0.
Similar content being viewed by others
References
S. P. Prosen, ASTM STP 460 (1969) 5.
R. J. Sanford and F. R. Stonesifer, J. Comp. Mater. 5 (1971) 241.
R. W. Davidge and G. Tappin, J. Mater. Sci. 3 (1968) 165.
A. A. Griffith, Phil. Trans. R. Soc. A-221 (1921) 163.
E. Srawley and F. Brown, ASTM STP 381 (1964).
G. A. Cooper and A. Kelly, ibid 452 (1969) 90.
W. W. Gerberich, J. Mech. Phys. Solids 19 (1971) 71.
F. J. Mcgarry, “Fundamental Aspects of Fibre Reinforced Plastic Composites”. Eds. R. T. Schwartz and H. S. Schwartz (John Wiley, New York, 1968) p. 63.
G. R. Irwin, NRL Report 5486 (July 1960).
H. T. Corten, “Fundamental Aspects of Fibre Reinforced Plastic Composites”. Eds. R. T. Schwartz and H. S. Schwartz (John Wiley, New York, 1968) p. 89.
W. F. Brown and J. E. Srawley, ASTM STP 410 (1967).
B. Gross and J. E. Srawley, NASA TN-2603 (1965).
R. W. Davidge and A. G. Evans, Mater. Sci. Eng. 6 (1970) 281.
G. R. Irwin, University of Illinois TAM Report 213 (1962).
H. Winne and B. M. Wundt, Trans. ASME 80 (1958) 1643.
J. Nakayama, Jap. J. Appl. Phys. 7 (1964) 422.
H. G. Tattersall and G. Tappin, J. Mater. Sci 1 (1966) 296.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Marom, G., White, E.F.T. Improvements in the transverse properties of composites. J Mater Sci 7, 1299–1307 (1972). https://doi.org/10.1007/BF00550696
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00550696