High-precision measurement of the group velocity of ultrasound in structural materials on a small base
- Authors: Makalkin D.I.1,2, Karabutov A.A.1, Savateeva E.V.1
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Affiliations:
- Prokhorov General Physics Institute of the Russian Academy of Sciences
- MIREA – Russian Technological University
- Issue: Vol 518, No 1 (2024)
- Pages: 75-80
- Section: ТЕХНИЧЕСКИЕ НАУКИ
- URL: https://journals.rcsi.science/2686-7400/article/view/282899
- DOI: https://doi.org/10.31857/S2686740024050121
- EDN: https://elibrary.ru/HWVPIO
- ID: 282899
Cite item
Abstract
A method for high-precision measurement of the group velocity of ultrasound in millimeter-thick metal plates using a laser thermo-optical source of ultrasonic pulses is considered. Thickness-calibrated Gauge blocks are used as samples. The influence of the ultrasonic beam diffraction effect and other technical factors are taken into account. It has been experimentally shown that deconvolution of a signal with a pulse characteristic of a receiving converter, together with digital filtering, helps to reduce the dispersion of group velocity measurements – it is less than 0.2% for samples with thicknesses of 1–2 mm.
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About the authors
D. I. Makalkin
Prokhorov General Physics Institute of the Russian Academy of Sciences; MIREA – Russian Technological University
Author for correspondence.
Email: dmitrymakalkin@yandex.ru
Russian Federation, Moscow; Moscow
A. A. Karabutov
Prokhorov General Physics Institute of the Russian Academy of Sciences
Email: dmitrymakalkin@yandex.ru
Russian Federation, Moscow
E. V. Savateeva
Prokhorov General Physics Institute of the Russian Academy of Sciences
Email: dmitrymakalkin@yandex.ru
Russian Federation, Moscow
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