Qualification of a multi-diagnostic detonator-output characterization procedure utilizing PMMA witness blocks

Journal Article · Tue Jul 03 00:00:00 EDT 2018 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.5045004· OSTI ID:1565846

Biss, Matthew M. ^[1]; Murphy, Michael John  ^[1]; Lieber, Mark Andrew  ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

In this study, experiments were conducted to qualify a multi-diagnostic characterization procedure for the performance output of a detonator when fired into a poly(methyl methacrylate) (PMMA) witness block. A suite of optical diagnostics were utilized in combination to both bound the shock wave interaction state at the detonator/PMMA interface and characterize the nature of the shock wave decay in PMMA. The diagnostics included the Shock Wave Image Framing Technique (SWIFT), a photocathode tube streak camera, and photonic Doppler velocimetry (PDV). High-precision, optically clear witness blocks permitted dynamic flow visualization of the shock wave in PMMA via focused shadowgraphy. SWIFT-and streak-imaging diagnostics captured the spatiotemporally evolving shock wave, providing a two-dimensional temporally discrete image set and a one-dimensional temporally continuous image, respectively. PDV provided the temporal velocity history of the detonator output along the detonator axis. Lastly, through combination of the results obtained, a bound was able to be placed on the interface condition and a more-physical profile representing the shock wave decay in PMMA for an exploding-bridgewire detonator was achieved.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: 89233218CNA000001; AC52-06NA25396
• OSTI ID: 1565846
• Report Number(s): LA-UR-17-27864
• Journal Information: AIP Conference Proceedings, Vol. 1979; Conference: SHOCK COMPRESSION OF CONDENSED MATTER, St. Louis, MO (United States), 9-14 July 2017; ISSN 0094-243X
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

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