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Proceedings 2018, 2(8), 442; https://doi.org/10.3390/ICEM18-05312

Influence of Charge Backing on the Response of Blast Loaded Plates

Blast Impact Survivability Research Unit (BISRU), Department of Mechanical Engineering, University of Cape Town, Cape Town 7700, South Africa
Presented at the 18th International Conference on Experimental Mechanics (ICEM18), Brussels, Belgium, 1–5 July 2018.
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Published: 12 June 2018
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Abstract

This study focuses on characterizing the transient deformation of test plates which have been exposed to air blasts arising from air-backed and metal-backed explosive detonations. Four charge masses are considered, namely 10 g, 15 g, 20 g and 25 g masses of PE4 plastic explosive which were moulded into cylindrical charges of a constant 38 mm diameter. The transient deformation of the test plates was captured using high speed Digital Image Correlation (DIC), which utilized two high speed cameras to record the experiments. The experimental plates exhibited plastic deformation with no tearing. The impulse imparted to the test plates increased fivefold when the charge was metal-backed. The permanent deflections from the metal-backed detonations were larger than for air, but not to the same degree as the impulse increase.
Keywords: blast response; plates; plastic deformation; impulse distribution; charge backing blast response; plates; plastic deformation; impulse distribution; charge backing
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Curry, R.; Langdon, G. Influence of Charge Backing on the Response of Blast Loaded Plates. Proceedings 2018, 2, 442.

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