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Proceedings Paper

Quantitative imaging approaches dedicated to shock-physics experiments
Author(s): P. Mercier; P. A. Frugier; E. Lescoute; R. Ecault; P. Chavel; M. Boustie
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Paper Abstract

Structured Light Systems (SLS) give access, without contact, to a rich measurement of a cloud of points belonging to a same object surface. SLS received much interest in the past years and became a standard technique. The aim of this talk is to present the design of such a means, working in the visible spectrum, dedicated to shock physics (implying velocities up to several km/s) and to provide an example of measurements with a 3D reconstruction. A dedicated development is necessary (laser lighting, speckle smoothing, ambient light canceling, depth of field improvement), since commonly developed SLS don’t suit this field of study, mainly for three reasons: phenomena of interest (usually lasting a few microseconds) require extremely short exposure durations (few nanoseconds to few hundreds of picoseconds); the field of view ranges from millimeter for samples shocked by high power lasers to decimeter for high-explosive setups ; and finally, experimentations have single-shot acquisitions. The main domains of study are fragmentations, surface deformations and associated damages, like micro-spalling or ejected particle clouds.

Paper Details

Date Published: 20 February 2017
PDF: 7 pages
Proc. SPIE 10328, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics, 103281K (20 February 2017); doi: 10.1117/12.2269779
Show Author Affiliations
P. Mercier, CEA, DAM, DIF (France)
P. A. Frugier, CEA, DAM, DIF (France)
E. Lescoute, CEA, DAM, DIF (France)
R. Ecault, Airbus Group Innovations (France)
P. Chavel, Lab. Charles Fabry, Institut d'Optique Graduate School (France)
M. Boustie, ENSMA, Institut P' (France)


Published in SPIE Proceedings Vol. 10328:
Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics
T. Goji Etoh; Hiroyuki Shiraga, Editor(s)

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