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Fracture mechanisms of quasi-brittle materials based on acoustic emission

Published online by Cambridge University Press:  31 January 2011

A. K. Maji ,
C. Ouyang  and
S. P. Shah
A. K. Maji
Affiliation:
Assistant Professor in the Department of Civil Engineering, The University of New Mexico
C. Ouyang
Affiliation:
Research Associate at NSF Science and Technology Center for Advanced Cement-Based Materials at Northwestern University, Evanston, Illinois 60208
S. P. Shah
Affiliation:
Professor and Director of NSF Science and Technology Center for Advanced Cement-Based Materials at Northwestern University, Evanston, Illinois 60208
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Abstract

Recently acoustic emission (AE) techniques have been used to study crack propagation in materials. The application of these techniques to heterogeneous, quasi-brittle materials such as concrete requires a better understanding of how the signal generated from a microfracture is transformed due to wave propagation and due to the transducer response. In this study, piezoelectric transducers were calibrated using displacement transducers. The validity of an elastodynamic Green's function approach was examined for cement-based materials. The acoustic emission source was characterized using moment tensor analysis. Acoustic emission measurements were analyzed for center-cracked-plate specimens of mortar and concrete. It was observed that, as expected, the dominant mode of cracking was mode I (tensile). However, mode II (shear) and mixed mode cracks also occurred, perhaps due to grain boundary sliding and interface debonding. Microfractures appear to localize prior to critical crack propagation. Mode I cracks generally required more energy release than mode II and a smaller inclusion provided a stronger interface bond than the larger ones.

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Type
Articles
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Journal of Materials Research , Volume 5 , Issue 1 , January 1990 , pp. 206 - 217
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

1Hamstad, M. A., Experimental Mechanics 26, 7–13 (1986).Google Scholar
2Berthelot, J. M. and Robert, J. L., Journal of Acoustic Emission 6, 43–60 (1987).Google Scholar
3Izsumi, M., Mihashi, H., and Nomura, N., Proc. of 7th Int. Acoustic Emission Symp., Zao, Japan, 1984, published by the Japan Society for Non-destructive Inspection, October 1984.Google Scholar
4Tanigawa, Y., Yamada, K., and Kiriyama, S., Trans. Jpn. Concrete Institute 2, 155–162 (1980).Google Scholar
5Maji, A. K. and Shah, S. P., Experimental Mechanics 28, 27–33 (1988).CrossRefGoogle Scholar
6Labuz, J., Shah, S. P., and Dowding, C. H., Int. J. of Rock Mechanics and Mining Sci. 22, 85–98 (1987).Google Scholar
7Scruby, C. B., Baldwin, G. R., and Stacey, K. A., Int. J. of Fracture 28, 201–222 (1985).CrossRefGoogle Scholar
8Kim, K.Y.and Sachse, W., Int. J. of Fracture 31, 211–231 (1986).CrossRefGoogle Scholar
9Ohtsu, M., Yuyama, S., and Imanaka, T., Acoust, J.. Soc. of Am. 82, 506–512 (1987).Google Scholar
10Yuyama, S., Imanaka, T., and Ohtsu, M., J. Acoust. Soc. of Am. 83, 976–983 (1988).Google Scholar
11Hsu, N., “Dynamic Green's Function of an Infinite Plate-A Computer Program,” NBSIR 85–3234, National Bureau of Standards, Gaithersburg, MD (1985).CrossRefGoogle Scholar
12Sansalone, M., Carino, N. J., and Hsu, N. N., J. of Research of the National Bureau of Standards 92, 267–278 (1987).CrossRefGoogle Scholar
13Hsu, N. N. and Brechenridge, F. R., Materials Evaluation 39, 60–68 (1981).Google Scholar
14Aki, K. and Richards, P. G., Quantitative Seismology, Theory and Methods (W. H. Freeman and Company, 1980), Vol. I, pp. 50–61.Google Scholar
15Chang, C. and Sachse, W., J. Acoust. Soc. of Am. 79, 1307–1316 (1986).CrossRefGoogle Scholar
16Michaels, J. E., Michaels, T. E., and Sachse, W., Materials Evaluation m39, 1032–1036 (1981).Google Scholar
17Chen, H. L., Lin, W., Keer, L. M., and Shah, S. P., J. of Appl. Mechanics, ASME, 55, 887–894 (1988).CrossRefGoogle Scholar
18Alvarado, M., Shah, S. P., and John, R., J. of Eng. Mech. ASCE 115 (2), 366–383 (1989).CrossRefGoogle Scholar
19Maji, A. K. and Shah, S. P., American Concrete Institute, SP-112, Nondestructive Testing (1989).Google Scholar
20Mindess, S., Fracture Mechanics of Concrete, edited by Carpinteri/ Ingraffea (Martinus Nijhoff Publishers, The Hague, 1984), pp. 67–102.Google Scholar
21Miller, R. A., Shah, S.P., and Bjelkhagen, H.I., Experimental Mechanics 28 (4), 388–394 (1989).CrossRefGoogle Scholar
22Shah, S. and Chandra, S., Journal of American Concrete Institute 65, 770–790 (September 1968).Google Scholar