VISAR Analysis in the Frequency Domain

Dolan, D. H.; Specht, P.

doi:10.1007/s40870-017-0121-7

Title: VISAR Analysis in the Frequency Domain

Journal Article · Thu May 18 00:00:00 EDT 2017 · Journal of Dynamic Behavior of Materials

DOI:https://doi.org/10.1007/s40870-017-0121-7· OSTI ID:1367088

Dolan, D. H. ^[1]; Specht, P. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

VISAR measurements are typically analyzed in the time domain, where velocity is approximately proportional to fringe shift. Moving to the frequency domain clarifies the limitations of this approximation and suggests several improvements. For example, optical dispersion preserves high-frequency information, so a zero-dispersion (air delay) interferometer does not provide optimal time resolution. Combined VISAR measurements can also improve time resolution. With adequate bandwidth and reasonable noise levels, it is quite possible to achieve better resolution than the VISAR approximation allows.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000; NA0003525

OSTI ID:: 1367088

Report Number(s):: SAND-2017-6427J; PII: 121

Journal Information:: Journal of Dynamic Behavior of Materials, Vol. 3, Issue 3; ISSN 2199-7446

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

References (8)

VISAR: displacement-mode data reduction Hemsing, Willard F. San Diego '90, 8-13 July, SPIE Proceedings https://doi.org/10.1117/12.23343	conference	January 1991
Spectroscopic refractometer for transparent and absorbing liquids by reflection of white light near the critical angle Sánchez-Pérez, C.; García-Valenzuela, A. Review of Scientific Instruments, Vol. 83, Issue 11 https://doi.org/10.1063/1.4764565	journal	November 2012
Velocity sensing interferometer (VISAR) modification Hemsing, Willard F. Review of Scientific Instruments, Vol. 50, Issue 1 https://doi.org/10.1063/1.1135672	journal	January 1979
Shock‐Wave Studies of PMMA, Fused Silica, and Sapphire Barker, L. M.; Hollenbach, R. E. Journal of Applied Physics, Vol. 41, Issue 10 https://doi.org/10.1063/1.1658439	journal	September 1970
Optically recording interferometer for velocity measurements with subnanosecond resolution Bloomquist, D. D.; Sheffield, S. A. Journal of Applied Physics, Vol. 54, Issue 4 https://doi.org/10.1063/1.332222	journal	April 1983
Laser interferometer for measuring high velocities of any reflecting surface Barker, L. M.; Hollenbach, R. E. Journal of Applied Physics, Vol. 43, Issue 11 https://doi.org/10.1063/1.1660986	journal	November 1972
Correction to the velocity‐per‐fringe relationship for the VISAR interferometer Barker, L. M.; Schuler, K. W. Journal of Applied Physics, Vol. 45, Issue 8 https://doi.org/10.1063/1.1663841	journal	August 1974
Foundations of VISAR analysis. Dolan, Daniel H. https://doi.org/10.2172/886901	report	June 2006

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Related Subjects

36 MATERIALS SCIENCE
VISAR
Velocimetry
Fourier transform
Frequency domain
Time resolution

Title: VISAR Analysis in the Frequency Domain

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References (8)

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