Abstract
Normal reflection of a longitudinal acoustic wave from the plane interface between a solid acoustic line and a strongly dissipative medium (an epoxide resin compound in the process of solidification) has been experimentally investigated. A 14‐fold change in the reflection coefficient of pulsed signals and a decrease in their duration have been detected and the point of phase transmission has been reliably determined by the minimum of the reflection coefficient. The coefficient of reflection of continuous acoustic waves with frequencies of 1–10 MHz from the interface between a plexiglas (or aluminum) and an epoxide resin compound in the process of solidification has been measured. The influence of the amplitude‐frequency characteristic of an ultrasonic piezoelectric transducer on the measurement data obtained has been analyzed. The change in the viscosity coefficient of an epoxide resin compound in the process of its solidification has been calculated by the spectral transform method with the use of computer programs and experimental data on the reflection coefficient dynamics.
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References
E. Dieulesaint and D. Rayer, Ondeselastiques dans les solider [Russian translation], Nauka, Moscow (1982).
M. B. Vinogradova, O. V. Rudenko, and A. P. Sukhorukov, The Theory of Waves [in Russian], Nauka, Moscow (1990).
D. A. Kostyuk and Yu. A. Kuzavko, Anomalies of the reflection of an ultrasonic wave from the boundary of a dissipative medium, Pis'ma Zh. Tekh. Fiz., 27, Issue 23, 31–40 (2001).
D. A. Kostyuk and Yu. A. Kuzavko, Anomalies of the reflection of an ultrasonic wave from the boundary of a dissipative medium film, Inzh.-Fiz. Zh., 75, No. 4, 181–186 (2002).
D. A. Kostyuk and Yu. A. Kuzavko, Anomalies of the propagation of a longitudinal sound wave in a dissipa-tive medium layer, Inzh.-Fiz. Zh., 76, No. 1, 128–133 (2003).
D. A. Kostyuk and Yu. A. Kuzavko, Acoustic pulsed diagnostics of the preparation of technological products, in: Ext. Abstr. of Papers presented at Belorussian-Polish Scientific-Practical Seminar [in Russian], Grodno (2000), pp. 181–182.
G. Kino, Acoustic Waves [Russian translation], Mir, Moscow (1990).
P. V. Novitskii, Principles of the Information Theory of Measurement Devices [in Russian], Énergiya, Leningrad (1968).
V. I. Krylovich, Ultrasonic Frequency-Phase Methods for Investigation and Nondestructive Control [in Russian], Nauka i Tekhnika, Minsk (1985).
D. A. Kardashov and A. P. Petrova, Polymer Adhesives [in Russian], Khimiya, Moscow (1983).
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Kostyuk, D.A., Kuzavko, Y.A. Anomalous Reflection of a Longitudinal Ultrasonic Wave from a Strongly Dissipative Medium. Journal of Engineering Physics and Thermophysics 77, 1040–1048 (2004). https://doi.org/10.1023/B:JOEP.0000049548.22587.33
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DOI: https://doi.org/10.1023/B:JOEP.0000049548.22587.33