Measuring Fast Mechanical Deformation with Micrometer Precision Based on Millimeter Wave Interferometry

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发表日期：

2024年8月5日

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V. V. Balandin,
Vl. Vl. Balandin,
D. A. Mansfeld,
K. V. Mineev,
V. V. Parkhachev,
R. M. Rozental,
A. V. Vodopyanov

摘要

A millimeter wave interferometer based on a Ka-band CW signal generator and a high-speed oscilloscope has been implemented, which makes it possible to carry out measurements without frequency conversion. The experimental measurements of the amplitude of transverse deformations of a metal rod caused by impact loading have been carried out. A good agreement between the calculated and measured data was revealed, demonstrating the possibility to measure microsecond-duration surface deviations with an accuracy of about 1 μm and a relative error of about 8%.