Blast protection of thin aluminium plates by using mineral foam-core sacrificial cladding

Aldjabar Aminou, Mohamed Ben Rhouma, Bachir Belkassem, Lincy Pyl, David Lecompte

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

Cellular materials, such as aluminum foam, have proven to be highly effective at absorbing energy, making them ideal for use as crushable cores in sacrificial cladding for blast mitigation. This paper presents insights into the blast response of a brittle mineral foam-based sacrificial cladding. The experimental set-up used involves a rigid steel frame (1000 mm × 1000 mm × 15 mm) with a square cavity of 300 mm x 300 mm at its center. A 2mm-thick aluminum plate, representing the structure to be protected, is clamped into the frame, which is then subjected to a blast load generated by detonating 20 g of C4 placed at a distance of 250 mm from the center of the plate. Two synchronized high-speed cameras in a stereoscopic configuration are used to capture the dynamic response of the aluminum plate at a frame rate of 20000 frames per second. The absorption capacity of the brittle mineral foam is assessed by comparing the out-of-plane displacement, the velocity and the acceleration of the thin aluminum plate with and without the protective mineral foam. Two foam configurations with different thicknesses are considered: 60 mm and 120 mm. It is shown that adding the brittle mineral foam reduces the out-of-plane displacement together with the displacement velocity and acceleration of the aluminum plate at least by a factor of two.
Original languageEnglish
Title of host publicationProceedings of the 6th International Conference on Protective Structures
EditorsJames S. Davidson, Catherine S. Stephens
PublisherInternational Association of Protective Structures
Pages1785-1798
Number of pages14
ISBN (Electronic)979-8-218-31237-4
Publication statusPublished - 2023
Event6th International Conference on Protective Structures - Auburn University, Auburn, United States
Duration: 14 May 202317 May 2023
Conference number: 6th
https://eng.auburn.edu/icps6/index.html

Conference

Conference6th International Conference on Protective Structures
Abbreviated titleICPS6
Country/TerritoryUnited States
CityAuburn
Period14/05/2317/05/23
Internet address

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