Skip to Main content Skip to Navigation
Theses

Confinement à l'aide de mousse aqueuse des effets combinés de souffle et de projection de fragments générés par la détonation d'un engin explosif

Abstract : The fight against Improvised Explosive Device (IED) effects represents a permanent challenge for homeland security and armed forces protection deployed abroad. Aqueous foam was identified as a protective technology against blast effects in the 1970s. Several physical characteristics can account for this attenuation but their relative influences are still not completely determined and require further investigation. The objective of this study is to improve the knowledge of the physical phenomena governing the interaction between an aqueous foam layer and a shock/metallic fragments combination. Depending on the distance between the explosive charge and the absorption medium, the shock is likely to arrive before the fragments consequently modifying the foam structure. Experiments with a single fragment were undertaken in a one dimensional configuration. Obtained results were applied to predict the foam mitigation capability against a complete explosive charge detonated in free field at the French-German Research Institute of Saint-Louis (ISL) in the research group "Protection against Explosives". Pressure measurements in shock tube with visualization of shock/bubbles interaction provided precise information on the foam structure evolution during the impact process. These last experiments were conducted in LBMS (ENSTA Bretagne) and in the research group "Aerodynamic, Measurements and Simulations" (ISL), using a shock tube generating blast wave profiles.
Complete list of metadatas

Cited literature [172 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-01974912
Contributor : Abes Star :  Contact
Submitted on : Wednesday, January 9, 2019 - 10:03:07 AM
Last modification on : Wednesday, September 16, 2020 - 9:57:04 AM

File

These-2015-EDSM-Genie_mecaniqu...
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01974912, version 1

Citation

Carole Bréda. Confinement à l'aide de mousse aqueuse des effets combinés de souffle et de projection de fragments générés par la détonation d'un engin explosif. Génie mécanique [physics.class-ph]. Université de Bretagne occidentale - Brest, 2015. Français. ⟨NNT : 2015BRES0047⟩. ⟨tel-01974912⟩

Share

Metrics

Record views

258

Files downloads

600