Impulse Loading of Plates using a Diverging Shock Tube

Impulsive blast loading studies typically require facilities with sub-millisecond decay time simulation capability. Using a conventional shock tube for such studies, however, is not viable due to a finite shock formation distance that limits the size of the shortest, functional driven tube. To overc...

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Bibliographic Details
Published in:Experimental mechanics 2020-04, Vol.60 (4), p.565-569
Main Authors: Isaac, O. S., Jagadeesh, G.
Format: Article
Language:English
Subjects:
Biomedical Engineering and Bioengineering
Blast loads
Brief Technical Note
Characterization and Evaluation of Materials
Control
Decay
Dynamical Systems
Engineering
Explosions
Impulse loading
Lasers
Metal plates
Optical Devices
Optics
Photonics
Shock tubes
Solid Mechanics
Vibration
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Summary:Impulsive blast loading studies typically require facilities with sub-millisecond decay time simulation capability. Using a conventional shock tube for such studies, however, is not viable due to a finite shock formation distance that limits the size of the shortest, functional driven tube. To overcome this, a diverging (conical) shock tube has been proposed in this work, motivations for which are grounded in simple shock tube theory. Using such a shock tube, for the first time, blast pulses having decay times of around 0.7 m s have been achieved repeatably (± 5.5 % ). Subsequently, blast loading experiments (equated to 30 − 40 g TNT surface explosion at 0.5 m stand-off distance) carried out on metal plates showed that this device can replicate the deflection patterns of an impulsive blast loading which could not be obtained so far using conventional shock tubes.
ISSN:0014-4851
1741-2765
DOI:10.1007/s11340-019-00573-5