Observations of shock-induced reaction in liquid bromoform up to 11 GPA

Sheffield, Steve; Gustavsen, Rick; Alcon, R. R.

doi:10.2172/102143

Cited by 3 publications

(1 citation statement)

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“…Subsequently, particle velocity gauges have been used in a large number of energetic materials, mostly by Sheffield, Gustavsen, Alcon and their co-workers [17][18][19][20][21][22][23][24][25][26] and others from LANL [27]. Their use in non-energetic materials has not been so extensive, but some work has been performed on polymers [28], geological materials [29] and ice [30].…”

Section: Introductionmentioning

confidence: 99%

Development of magnetic gauges for the measurement of particle velocities during one-dimensional shock loading

Millett

Bourne

2003

Meas. Sci. Technol.

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The measurement of particle velocity in shock-loaded materials (that is the velocity of material flow behind the shock front) is an important parameter in the understanding of a material's response to shock loading. This can be measured directly by the use of embedded sensors within the target material, which track the material flow. This takes advantage of Faraday's law, where a moving conductor within a magnetic field experiences an imposed voltage, the magnitude of which is dependent upon the length of that conductor and the velocity through the magnetic field. However, such measurements are not as widespread as other techniques such as interferometers or stress gauges. In this paper, the development of such sensors is discussed, and the results from their use in a material whose shock response is already known (polymethylmethacrylate) are presented. Much of the work by previous authors concerning particle velocity gauges has introduced them at an angle to the impact axis. This was done to prevent each gauge element interfering with those immediately behind it by impeding material flow. Therefore we have investigated the role of gauge plane angle on the resultant particle velocity gauge records. We have also included a separate castellated gauge element, the shock tracker, to measure the shock position with respect to time, and thus use to determine the shock front velocity. The results from this gauge element are discussed, both in context with the results from the particle velocity gauges and with measurements under known conditions from the work of others.

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Section: Introductionmentioning

confidence: 99%

Development of magnetic gauges for the measurement of particle velocities during one-dimensional shock loading

Millett

Bourne

2003

Meas. Sci. Technol.

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Shock initiation of PBX-9502 at elevated temperatures

Mulford¹,

Alcon²

1996

AIP Conference Proceedings

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By acceptance of this article, the publisher recognizes that the U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce the published form of this contribution, or to allow others to do so, for U.S. Government purposes. The shock sensitivity of PBX-9502 is known to change with temperam. Both volume expansion and increased internal energy may conmbute to this phenomenon. PBX-9502 was heated and its initiation and detonation behavior was examined, using MIV and shock aacker gauging on a light gas gun. Sensitivity and reactive wave profiles were measured. Complementary experiments were done on PBX-9502 made to undergo "ratchet growth", or non-reversible anisotropic thermal expansion, under carefully conwlled thermal cycling. This process causes noticeable size changes and sigdicant changes in sensitivity. Sensitivity and reactive wave profdes are discussed in tenns of density and microscopic material morphology.

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Reaction Buildup of PBX Explosives JOB-9003 under Different Initiation Pressures

Zhang

Wang

Hung

et al. 2016

Journal of Energetic Materials

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Observations of shock-induced reaction in liquid bromoform up to 11 GPA

Abstract: Portions of this document may be illegible in electronic image products. Images are produced from the best available original document.

Cited by 3 publications

References 0 publications

Development of magnetic gauges for the measurement of particle velocities during one-dimensional shock loading

Development of magnetic gauges for the measurement of particle velocities during one-dimensional shock loading

Shock initiation of PBX-9502 at elevated temperatures

Reaction Buildup of PBX Explosives JOB-9003 under Different Initiation Pressures

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