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- Title
An interferometer with time-and-frequency signal compression for studying properties of materials in shock wave experiments.
- Authors
Mokrushin, S.; Anikin, N.; Malyugina, S.; Pavlenko, A.; Tyaktev, A.
- Abstract
A two-channel infrared (1.55 μm) laser interferometer intended for measuring velocities of free surfaces in shock-wave experiments is described. Characteristics of the device and comparison results with the VISAR interferometer are given. A combination of Photonic Doppler Velocimetry (PDV) and PDV-Pivot interferometric schemes allows one to implement operation in four different modes and efficiently use capabilities of up-to-date digital oscilloscopes. A 4-GHz bandwidth oscilloscope enables one to measure velocities in a range of 0-6 km/s. The proposed interferometer is efficient for studies of the properties of structural materials, inner ballistics, detonation kinetics, and projectile ability of explosives.
- Subjects
TIME-frequency analysis; COMPRESSION loads; SHOCK waves; LASER interferometers; DOPPLER velocimetry; DIGITAL oscilloscopes; BANDWIDTHS
- Publication
Instruments & Experimental Techniques, 2014, Vol 57, Issue 4, p475
- ISSN
0020-4412
- Publication type
Article
- DOI
10.1134/S0020441214030075