Impact damage and detonation initiation in a thin layer of explosive

Afanas'ev, G. T.; Bobolev, V. K.; Karabanov, Yu. F.; Shchetinin, V. G.

doi:10.1007/bf00740550

Cited by 7 publications

(2 citation statements)

References 2 publications

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“…Afanas′ev et al. [21] proposed the ignition mechanism of shear bands. When the strain or deformation is continuously intensified and the mechanical resistance of energetic materials or structures decreases, shear bands will be formed.…”

Section: Introductionmentioning

confidence: 99%

“…Bowden & Yoffe [20] summarized the formation mechanism of hot spots under the impact of the drop hammer, and believed that the possible reasons for the formation of hot spots were: (1) adiabatic compression of the gap between solid energetic materials or the adiabatic compression of existing bubbles; (2) friction between the surfaces of energetic particles or within the crystals. Afanas'ev et al [21] proposed the ignition mechanism of shear bands. When the strain or deformation is continuously intensified and the mechanical resistance of energetic materials or structures decreases, shear bands will be formed.…”

Section: Introductionmentioning

confidence: 99%

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Effect of temperature on ignition mechanism of Ammonium Perchorate (AP) particles under drop weight impact

Xia

Duan

et al. 2023

Propellants Explo Pyrotec

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The experimental analysis of ignition responses of mildly impacted Ammonium Perchorate (AP) particles was performed based on an optimized drop‐weight system equipped with a High‐Speed Camera (HSC). The experimental results suggested that the jetting phenomena observed by HSC is the result of the energy released by gaseous products, which push the pulverized or melted particles to splash radially. In the process of complex stress stimulation, AP particles experienced four stages of compaction, solid phase transition, sputtering, and ignition. In addition, with the increase in temperature, AP particle sensitivity increased. At room temperature, AP particles are insensitive particles. When the temperature is 50 °C, the ignition threshold of AP particles is 40 cm. However, when the temperature increases to 100 °C, the ignition threshold is 35 cm. Finally, particle friction and rapid gas compression are the main reasons for the ignition of AP particles during impact loading.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of temperature on ignition mechanism of Ammonium Perchorate (AP) particles under drop weight impact

Xia

Duan

et al. 2023

Propellants Explo Pyrotec

View full text Add to dashboard Cite

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Effect of Graphene on Ignition Mechanism of HMX Powder and Propellant Under Low‐Velocity Impact

Duan,

Wu,

Yang

2024

Propellants Explo Pyrotec

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In order to investigate the effect of graphene powder on the ignition mechanism of cyclotetramethylene tetranitramine (HMX) and propellant under low‐velocity impact, an improved drop hammer impact system equipped with a high‐speed camera was used to study the ignition response of HMX, HMX and graphene mixture, and graphene‐based propellant. The results show that HMX undergoes mechanical deformation, physical melting, and chemical response under different impact loading heights. The mixture of HMX and graphene experienced crack initiation, crack propagation, jetting, and carbonization effect during the whole impact loading process. The whole process of graphene‐based propellant impact undergoes mechanical deformation and chemical response (hot‐spot and ignition). The ignition thresholds of HMX and HMX powder‐graphene mixture were 20 and 25 cm, respectively. It is revealed that graphene powder has an inhibitory effect on the hot‐spot ignition formation of HMX. The ignition threshold of the graphene‐based propellant is 4.245 m/s. It is revealed that the ignition mechanism of the three types of specimens under low‐velocity impact loading is particle friction.

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Numerical simulation of drop weight impact sensitivity evaluation criteria for pressed PBXs

2023

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Impact damage and detonation initiation in a thin layer of explosive

Cited by 7 publications

References 2 publications

Effect of temperature on ignition mechanism of Ammonium Perchorate (AP) particles under drop weight impact

Effect of temperature on ignition mechanism of Ammonium Perchorate (AP) particles under drop weight impact

Effect of Graphene on Ignition Mechanism of HMX Powder and Propellant Under Low‐Velocity Impact

Numerical simulation of drop weight impact sensitivity evaluation criteria for pressed PBXs

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