Experimental investigation of the propagation velocity of ultrasonic waves and calculation of the elastic constants of nanocrystalline pyrocarbon |
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| Authors: | A N Bekhterev |
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| Institution: | (1) St. Petersburg State University of Information Technologies, Mechanics, and Optics, Kronverskiĭ pr. 49, St. Petersburg, 197101, Russia |
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| Abstract: | The dispersion of the propagation velocity of ultrasonic waves in pyrocarbon samples with a monotonically varying structure is studied in a frequency range of 0.5–25 MHz. The elastic constants of pyrocarbon samples that were obtained with the processing temperatures of 2100–3200°C are calculated on the basis of the measured values of propagation velocities of longitudinal and transverse ultrasonic waves. |
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