A LABORATORY SCALE APPROACH TO INVESTIGATE THE EFFECTS OF BLAST AND FRAGMENT IMPACT LOADING ON STRUCTURES

Oussama Atoui, Azer Maazoun, Georgios Kechagiadakis, Bachir Belkassem, David Lecompte, Lincy Pyl

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This work is a part of a larger research effort to better understand the combined effect of the blast wave and fragment impacts following the detonation of a shrapnel bomb. It is known that the time interval Δt, which represents the difference in arrival time between the blast wave front and the fragment at the position of a given target object, has a significant influence on its response mode. This paper presents insights into the establishment of a laboratory scale technique to generate a combined blast loading and single or multiple projectile impacts on a target. The objective of the set-up is to control the time interval Δt to a certain extent so that the different response modes of the tested structures can be investigated. In order to reduce the complexity associated with the random nature of the shrapnel, steel ball bearings are used to simulate the projected fragments. They are embedded in a solid explosive charge, which is detonated at the entrance of an explosive driven shock tube. The experimental work demonstrates that it is possible to control the flight path of a single projectile inside the tube when aiming at a target positioned at its exit. The set-up guarantees the generation of a well-controlled planar blast wave characterized by its peak pressure, impulse and blast wave arrival time at the exit of the tube. The influence of the mass of the charge and the diameter of the projectile on its velocity shows that for the same charge mass, the time interval increases with increasing projectile diameter.
Originele taal-2English
TitelThe 6th International Conference on Protective Structures (ICPS6)
SubtitelThe 6th International Conference on Protective Structures (ICPS6)
Aantal pagina's16
StatusUnpublished - 14 mei 2023
Evenement6th International Conference on Protective Structures - Auburn University, Auburn, United States
Duur: 14 mei 202317 mei 2023
Congresnummer: 6th
https://eng.auburn.edu/icps6/index.html

Conference

Conference6th International Conference on Protective Structures
Verkorte titelICPS6
Land/RegioUnited States
StadAuburn
Periode14/05/2317/05/23
Internet adres

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