Attenuation Measurements in Cement-Based Materials Using Laser Ultrasonics
Publication: Journal of Engineering Mechanics
Volume 125, Issue 6
Abstract
This research uses laser ultrasonic techniques to quantify the frequency-dependent attenuation losses of Rayleigh waves in cement-based materials; these materials are heterogeneous in nature, and this heterogeneity is seen at multiple length scales. As a result, ultrasonic waves that propagate in cement-based materials exhibit a high degree of (material) attenuation losses. Physically, these attenuation losses are a combination of internal friction, such as the work done at material interfaces (ultrasonic absorption) and the scattering losses due to material heterogeneity. The high fidelity, large frequency bandwidth, and absolute, noncontact nature of laser ultrasonics makes this an ideal methodology to measure attenuation in these materials. This research uses a dual-probe, heterodyne interferometer to experimentally measure these attenuation losses (as a function of frequency) in three different materials: (1) aluminum; (2) mortar; and (3) granite. The aluminum results (aluminum is homogeneous at the wavelengths used here) are used to demonstrate the fidelity of the laser ultrasonic measurement technique, while the mortar and granite results (both are heterogeneous at these wavelengths) are used to quantify the attenuation losses present in each material.
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References
1.
Bruttomesso, D. A., Jacobs, L. J., and Costley, R. D. (1993). “Development of an interferometer for acoustic emission testing.”J. Engrg. Mech., ASCE, 119(11), 2303–2316.
2.
Ewing, M., Jardetzky, W., and Press, F. ( 1957). Elastic waves in layered media. McGraw-Hill, New York.
3.
Gaydecki, P. A., Burdekin, F. M., Damaj, W., Johns, D. G., and Payne, P. A. ( 1992). “The propagation and attenuation of medium-frequency ultrasonic waves in concrete: A signal analytical approach.” Measurement Sci. and Technol., 3(1), 126–134.
4.
Kim, Y. H., Lee, S., and Kim, H. C. ( 1991). “Attenuation and dispersion of elastic waves in multi-phase media.” J. Physics, D: Appl. Physics, 24(10), 1722–1728.
5.
Landis, E. N., and Shah, S. P. (1995). “Frequency-dependent stress wave attenuation in cement-based materials.”J. Engrg. Mech., ASCE, 121(6), 737–743.
6.
Santamarina, J. C., and Fratta, D. ( 1998). Discrete signals and inverse problems in civil engineering, ASCE, Reston, Va.
7.
Scruby, C. G., and Drain, L. E. ( 1990). “Laser Ultrasonics: Techniques and applications.” Adam Higler, New York.
8.
Tasker, C. G., Milne, J. M., and Smith, R. L. ( 1990). “Recent work at the National NDT Centre on concrete inspection.” British J. NDT, 32(7), 355–359.
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Received: Sep 9, 1998
Published online: Jun 1, 1999
Published in print: Jun 1999
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