Temperature effect on the impact sensitivity of aluminum-polytetrafluoroethylene layered composites

Denisaev, A. A.; Shteĭnberg, A. S.; Берлин, А. А.

doi:10.1134/s0012501609090012

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…The impact sensitivity of safety matchhead composition has influence on different process contact materials (steel, aluminium and brass) and on other properties such as surface roughness, thermal conductivity and hardness [2,3]. Studies have been reported on the effect of temperature on shock sensitivity of LX-17 explosive [5] and the impact sensitivity of Aluminum-Polytetrafluoroethylene Layered Composites [6]. The impact sensitivity was measured using equipment similar to BAM Fall hammer with standard anvil materials [6] but attention has not been paid on study the influence of different process contact materials at various temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Studies have been reported on the effect of temperature on shock sensitivity of LX-17 explosive [5] and the impact sensitivity of Aluminum-Polytetrafluoroethylene Layered Composites [6]. The impact sensitivity was measured using equipment similar to BAM Fall hammer with standard anvil materials [6] but attention has not been paid on study the influence of different process contact materials at various temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Temperature on Impact Sensitivity of Matchhead Composition while in Contact with Different Process Materials

Sivapirakasham¹,

Phanindra²,

Surianarayanan

et al. 2019

MSF

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This research work aims to understand the influence of temperature (upto 80°C) on the impact sensitivity of matchhead composition with various process contact materials (Steel, aluminium, brass) and to find out the critical temperature for process safety. The BAM fall hammer was modified with a heating element for the measurement of impact sensitivity. The Limiting Impact Energy (LIE) at ambient temperature condition with steel surface on the top and bottom was found to be 3.73J. The lowest critical temperature was found to be 60.14°C for the matchhead composition when it is in contact with steel, which was used as the contact material for both top and bottom.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Temperature on Impact Sensitivity of Matchhead Composition while in Contact with Different Process Materials

Sivapirakasham¹,

Phanindra²,

Surianarayanan

et al. 2019

MSF

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“…7 updated the technique for determination of hammer impact sensitivity of high explosive (HE). Recently, the standard indices of impact sensitivity of solid explosives are discussed 8 and the effect on the impact sensitivity of temperature 9, external electric field 10, and mass of sample 11 were also investigated. Furthermore, studies have been performed, where a single material was sent to a number of laboratories and drop‐weight sensitivity was measured 12.…”

Section: Introductionmentioning

confidence: 99%

Mass Dependent of Explosion Probability of RDX, Tetryl, and a PBX Powder in Drop Hammer Test

Wen

Long

Xiang

et al. 2015

Propellants Explo Pyrotec

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Series of Drop Weight Tests with varying sample mass of RDX, tetryl, and a PBX molding powder were carried out and the dramatic effects of sample mass on the explosion probability were obtained. The experimental results indicate that the explosion probability will firstly increase and subsequently decrease when the mass of sample reduces and also it shows the explosion probability is also related with the coverage area of the sample on the impact pillar. The explosion probability reached the maximum when the impact pillar was fully covered by the sample. A Dual‐factor‐competition Model is proposed in this work, which is able to predict the correlation between the explosion probability and sample mass. The response characteristic obtained can help to redesign the sensitivity test and provide a new way to distinguish the impact sensitiveness of insensitive explosives by reducing the sample mass.

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“…Yet, the flame temperature of combusting thermites and reactive materials (RM) is scarcely reported in the literature. Other characteristics such as ignition properties, [1][2][3][4][5][6] optical properties, 7 mechanical properties, [8][9][10][11][12] and numerical simulations [13][14][15] are more commonly reported.…”

mentioning

confidence: 99%

Thermal imaging of nickel-aluminum and aluminum-polytetrafluoroethylene impact initiated combustion

Densmore

Biss

Homan

et al. 2012

Journal of Applied Physics

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Articles you may be interested inThe role of microstructure refinement on the impact ignition and combustion behavior of mechanically activated Ni/Al reactive composites Bottom-up modeling of Al/Ni multilayer combustion: Effect of intermixing and role of vacancy defects on the ignition process Investigations on the self propagating reactions of nickel and aluminum multilayered foils Combustion temperatures from impact initiated nickel-aluminum (NiAl) and aluminumpolytetrafluoroethylene (Al-PTFE) materials have been measured using a high-speed two-camera imaging pyrometer. The materials were launched with a nominal velocity of 1700 m/s into a sealed chamber. Upon impact into a steel anvil chemical reactions were initiated and a flame propagated through the chamber. The measured temperature after impact was 3600 K (NiAl) and 3300 K (Al-PTFE).

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Temperature effect on the impact sensitivity of aluminum-polytetrafluoroethylene layered composites

Cited by 6 publications

References 2 publications

Influence of Temperature on Impact Sensitivity of Matchhead Composition while in Contact with Different Process Materials

Influence of Temperature on Impact Sensitivity of Matchhead Composition while in Contact with Different Process Materials

Mass Dependent of Explosion Probability of RDX, Tetryl, and a PBX Powder in Drop Hammer Test

Thermal imaging of nickel-aluminum and aluminum-polytetrafluoroethylene impact initiated combustion

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