VISAR Analysis in the Frequency Domain
Journal Article
·
· Journal of Dynamic Behavior of Materials
- 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.
- 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
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