Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-20T03:19:32.879Z Has data issue: false hasContentIssue false
  • English
  • Français

Relationships between acoustic emission signals and physical phenomena during indentation

Published online by Cambridge University Press:  31 January 2011

D. F. Bahr  and
W. W. Gerberich
D. F. Bahr
Affiliation:
Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
W. W. Gerberich
Affiliation:
Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
Get access

Abstract

A commercial piezoelectric acoustic emission transducer has been used in conjunction with nanoindentation techniques to study the relationship between acoustic emission signals and discrete physical events to identify the type and strength of an event. Indentations into tungsten and iron single crystals have been used to study dislocation generation and passive film failure. In addition, indentations made into a thin nitride film on sapphire have been used to cause film delaminations. Parameters such as signal rise time and frequency for a piezoelectric sensor are related to sample geometry, and not to the type of event which caused the acoustic emission signal. As a possible calibration for acoustic emission sensors, the most meaningful parameter is the acoustic emission energy, which has been shown to scale with the elastic energy released during the event. The measured values of elastic energy released correspond very closely to those calculated using Hertzian contact mechanics.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 4 , April 1998 , pp. 1065 - 1074
Copyright
Copyright © Materials Research Society 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Oliver, W. C. and Pharr, G. M., J. Mater. Res. 7, 1564 (1992).CrossRefGoogle Scholar
2.Gerberich, W. W., Venkataraman, S. K., Huang, H., Harvey, S. E., and Kohlstedt, D. L., Acta Metall. Mater. 43, 1569 (1995).CrossRefGoogle Scholar
3.Page, T. F., Oliver, W. C., and McHargue, C. J., J. Mater. Res. 7, 450 (1992).CrossRefGoogle Scholar
4.Weihs, T. P., Lawrence, C. W., Derby, B., Scruby, C. B., and Pethica, J. B., in Thin Films: Stresses and Mechanical Properties III, edited by Nix, W. D., Bravman, J. C., Arzt, E., and Freund, L. B. (Mater. Res. Soc. Symp. Proc. 239, Pittsburgh, PA, 1992), p. 361.Google Scholar
5.Scruby, C. B., Collingwood, J. C., and Wadley, H. N. G., J. Phys. D 11, 2359 (1978).CrossRefGoogle Scholar
6.Scruby, C. B., J. Phys. E 20, 946 (1987).CrossRefGoogle Scholar
7.Wadley, H. N. G., Scruby, C. B., and Speake, J. H., Int. Metal Rev. 3, 41 (1980).Google Scholar
8.Wadley, H. N. G., Scruby, C. B., and Shrimpton, G., Acta Metall. 29, 399 (1981).CrossRefGoogle Scholar
9.Kohn, D. H., Ducheyne, P., and Awerbuch, J., J. Mater. Sci. 27, 3133 (1992).CrossRefGoogle Scholar
10.Wu, T. W., J. Mater. Res. 6, 407 (1991).CrossRefGoogle Scholar
11.Moody, N. R., Hwang, R. Q., Angelo, J. E., Venkataraman, S. K., and Gerberich, W. W., Acta Mater. (in press).Google Scholar
12.Bahr, D. F., Hoehn, J. W., Moody, N. R., and Gerberich, W. W., Acta Mater. (in press) (1997).Google Scholar
13.Gerberich, W. W. and Hartbower, C. E., Int. J. Fract. Mech. 3, 185 (1967).CrossRefGoogle Scholar
14.Curtis, G. J., Non-Destruct. Test. 8, 249 (1975).CrossRefGoogle Scholar
15.Cai, H., Evans, J. T., and Boomer, D., Eng. Fract. Mech. 42, 589 (1992).CrossRefGoogle Scholar
16.Gerberich, W. W., Yu, W., Kramer, D., Strojny, A., Bahr, D., Lilleodden, E., and Nelson, J., J. Mater. Res. 13, 421 (1998).CrossRefGoogle Scholar