31 August 2000 Visualization of very weak shock waves by digital phase-shift interferometry
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Proceedings Volume 4076, Optical Diagnostics for Industrial Applications; (2000) https://doi.org/10.1117/12.397941
Event: Symposium on Applied Photonics, 2000, Glasgow, United Kingdom
Abstract
In this study, the method of digital phase shift holographic interferometry is applied to accurately measure the density distribution behind a weak shock wave. The goal of this investigation is to visualize and quantitatively evaluate flow fields behind weak disturbances, which are only marginally stronger than sound waves. In the present experiment, the shock Mach number was approximately Ms approximately equals 1.01. The wave was generated by the explosion of a small silver-azide (micro- charge) pellet, which was ignited by an Nd:YAG laser. Using phase shift interferometry, the phase distribution of the region far behind the incident shock could be detected.
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Toshiharu Mizukaki, Harald Kleine, Kazuyoshi Takayama, "Visualization of very weak shock waves by digital phase-shift interferometry", Proc. SPIE 4076, Optical Diagnostics for Industrial Applications, (31 August 2000); doi: 10.1117/12.397941; https://doi.org/10.1117/12.397941
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