Application and principles of photon-doppler velocimetry for explosives testing
- Los Alamos National Laboratory
The velocimetry technique PDV is easier to field than its predecessors VISAR and Fabry-Perot, works on a broader variety of experiments, and is more accurate and simple to analyze. Experiments and analysis have now demonstrated the accuracy, precision and interpretation of what PDV does and does not measure, and the successful application of POV to basic and applied detonation problems. We present a selection of results intended to help workers assess the capabilities of PDV. First we present general considerations about the technique: various PDV configurations, single-signal, multisignal (e.g., triature) and frequency-shifted PDV; what types of motion are sensed and missed by PDV; analysis schemes for velocity and position extraction; accuracy and precision of the results; and, experimental considerations for probe selection and positioning. We then present the status of various applications: detonation speeds and wall motion in cylinder tests, breakout velocity distributions from bare HE, ejecta, measurements from fibers embedded in HE, projectile velocity, resolving 2 and 3-D velocity vectors. This paper is an overview of work done by many groups around the world.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 992157
- Report Number(s):
- LA-UR-10-01427; LA-UR-10-1427; TRN: US201022%%144
- Resource Relation:
- Conference: 14th international detonation seminar ; April 11, 2010 ; Coeur d'Alene, Id
- Country of Publication:
- United States
- Language:
- English
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