A Study Of The Strain Response Of Stainless Steel 304 To Extreme Uniform Instantaneous Explosion Pressure Loads

[+] Author and Article Information
Geraint O. Thomas

maes-y-deri rhydlewis Ceredigion, sa435re United Kingdom geraintllan@gmail.com

Gwyn L. Oakley

Maes-y-Deri rhydlewis llandyssul, ceredigion SA44 5RE United Kingdom gwyn@abershock.com

1Corresponding author.

Contributed by the Materials Division of ASME for publication in the Journal of Engineering Materials and Technology. Manuscript received December 20, 2018; final manuscript received July 21, 2019; published online xx xx, xxxx. Assoc. Editor: Peter W. Chung.

ASME doi:10.1115/1.4044439 History: Received December 20, 2018; Accepted July 22, 2019


The paper describes a new configuration using a gaseous detonation explosive blast source suitable for studies of the instantaneous uniform pressure loading and mechanical response of materials. The capabilities of the configuration is illustrated by a preliminary series of experiments of the dynamic loading of clamped circular plates of 304 grade stainless steel with thicknesses ranging from 9.5mm to 0.5mm. The mechanical responses of the plates were monitored using strain gauges placed across the plate radius together with physical measurements of any permanent residual displacement of the center of the plate. The residual central deformations were analysed using a well established correlation involving non-dimensional pressure load impulse. No universal correlation for the present data was found, but linear relationships for changes in two experimental parameters were identified, suggesting that the existing correlations have some deficiencies when applied to stainless steel 304.

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