Abstract
Acoustic emission has been used to investigate the fracture processs in Al2O3 and an Al2O3-Mo fibre composite. The acoustic emission data indicate extensive micro-fracturing at loads considerably less than that required to cause fracture in Al2O3. The acoustic emission emanating from the composite in the early stages of fracture is very similar to that observed in Al2O3. However, as final fracture is approached the acoustic emission profiles differ considerably. The acoustic emission profiles are discussed in terms of the fracture mechanisms.
Similar content being viewed by others
References
P. Hing andG. W. Groves,J. Mater. Sci. 7 (1972) 422.
J. R. Tinklepaugh, “Strengthening Mechanisms — Proceedings of the 12th Army Materials Research Conference” (Syracuse University Press, Syracuse, New York, 1966) p. 579.
P. Hing andG. W. Groves,J. Mater. Sci. 7 (1972) 427.
L. A. Simpson andA. Wasylyshyn,J. Amer. Ceram. Soc. 54 (1971) 56.
D. C. Phillips andA. S. Tetelman,Composites 3 (1972) 216.
H. L. Dunegan, D. O. Harris andC. A. Tatro,Eng. Fract. Mech. 1 (1968) 105.
J. C. Radon andA. A. Pollock,Ibid,4 (1972) 295.
J. Fitz-Randolph, D. C. Phillips, P. W. R. Beaumont andA. S. Tetelman,J. Mater. Sci. 7 (1972) 289.
R. B. Liptai, D. O. Harris andC. A. Tatro, “Acoustic Emission” (ASTM publication, 1971) p. 3.
K. Tangri, J. P. Toronchuk andD. J. Lloyd,Trans. Indian Inst. Met. 25 (1972) 33.
J. Kaiser,Arch. Eisenhüttenw. 25 (1953) 43.
J. Glucklich,Eng. Fract. Mech. 3 (1971) 333.
C. H. Scholz,J. Geophys. Res. 73 (1968) 1417.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lloyd, D.J., Tangri, K. Acoustic emission from Al2O3-Mo fibre composites. J Mater Sci 9, 482–486 (1974). https://doi.org/10.1007/BF00737851
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00737851