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Crack-Tip Shielding in Metal-Matrix Composites: Modelling Of Crack Bridging by Uncracked Ligaments

Published online by Cambridge University Press:  22 February 2011

Jian Ku Shang  and
R. O. Ritchie
Jian Ku Shang
Affiliation:
Department of Materials Science and Mineral Engineering, University of California, Berkeley, CA 94720
R. O. Ritchie
Affiliation:
Department of Materials Science and Mineral Engineering, University of California, Berkeley, CA 94720
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Abstract

As part of an investigation into the micro-mechanisms of crack-tip shielding associated with the growth of fatigue cracks in metal-matrix composites, simple models are developed for the role of crack bridging in high-strength aluminum alloys reinforced with SiC particulate (AI/SiCp). Based on experimental observations of crack growth, crack-tip shielding and crack-path morphology in these alloys, the bridges are found to be associated with uncracked ligaments in the wake of the crack tip, and are modelled in terms of approaches based on a critical crack-opening displacement or critical tensile strain in the ligament.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 120: Symposium G – High-Temperature/High-Performance Composites , 1988 , 81
Copyright
Copyright © Materials Research Society 1988

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References

1. Evans, A. G., in Fracture Mechanics, 20th Symp., ASTM STP, edited by Wei, R.P. and Gangloff, R.P. (ASTM, Philadelphia, PA, 1988).Google Scholar
2. Ritchie, R. O., in Mechanical Behaviour of Materials - V, edited by Yan, M.G., Zhang, S.H. and Zheng, Z.M. (Pergamon, Oxford, U.K., 1988), vol. III.Google Scholar
3. Aveston, J., Cooper, G. and Kelly, A., in Properties of Fiber Composites, NPL Conf. Proc. (IPC Sci. & Tech. Press, Surrey, U.K., 1971), pp. 15–26.Google Scholar
4. Budiansky, B., Hutchinson, J. W. and Evans, A. G., J. Mech. Phys. Solids, 34, 167 (1986).Google Scholar
5. Marshall, D. B., Cox, B. N. and Evans, A. G., Acta Met., 33, 2013 (1985).Google Scholar
6. McCartney, L. N., Proc. Roy. Soc., A409, 329 (1987).Google Scholar
7. Rose, L. R. F., J. Mech. Phys. Solids, 35, 383 (1987).Google Scholar
8. Budiansky, B., in Proc. 10th U.S. Cong. Appl. Mech., (Austin, TX, 1986).Google Scholar
9. Kunz-Douglass, S., Beaumont, P. W. R. and Ashby, M. F., J. Mater. Sci., 15, 1109 (1980).Google Scholar
10. Mai, Y. and Lawn, B. R., J. Am. Ceram. Soc., 70, 289 (1987).Google Scholar
11. Gerberich, W. W., in Fracture: Interactions of Microstructure, Mechanisms and Mechanics, edited by Wells, J.M. and Landes, J.D. (TMS-AIME, Warrendale, PA, 1984), pp. 49–74..Google Scholar
12. Rosenfield, A. R. and Majumdar, B. S., Metall. Trans. A, 18A, 1053 (1987).Google Scholar
13. Marissen, R., in Fatigue 87, Proc. Third Intl. Conf. on Fatigue, edited by Ritchie, R.O. and Starke, E.A. (EMAS Ltd., 1988), vol. 3, pp. 1271–79.Google Scholar
14. Ritchie, R. O., Yu, W. and Bucci, R. J., Eng. Fract. Mech, (1988) in press.Google Scholar
15. Shang, J.-K., Yu, W. and Ritchie, R. O., Mater. Sci. Eng., (1988) in press.Google Scholar
16. Shang, J.-K. and Ritchie, R. O., Metall. Trans. A, 19A (1988) in review.Google Scholar
17. Christman, T. and Suresh, S., Mater. Sci. Eng., (1988) in press.Google Scholar
18. Sih, G. C., Handbook of Stress Intensity Factors (Lehigh University Press, Bethlehem, PA, 1972).Google Scholar
19. Shih, C. F., J. Mech. Phys. Solids, 29, 305 (1981).CrossRefGoogle Scholar
20. Veerman, C. C. and Muller, T., Eng. Fract. Mech., 4, 25 (1972).Google Scholar
21. Thouless, M. D., J. Am. Ceram. Soc.,71 (1988) in press.Google Scholar