A comparison of methods for detonation pressure measurement

Pachmáň, Jiří; Künzel, Martin; Němec, Ondřej; Majzlík, J.

doi:10.1007/s00193-017-0761-5

Cited by 19 publications

(26 citation statements)

References 32 publications

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“…It determines the shock wave energy of products and is generally measured by flyer plate method, impedance window method, detonation electric effect, etc. (Pachman et al, 2018). H e provides the count of the total amount of energy released by an HEDM in the reaction and can be measured by calorimetry (Kici nski and Trzci nski, 2009).…”

Section: Strategy For Improving Detonation Performance Of High-energy-density Materials Performance Of Solid-state High-energy-density Mamentioning

confidence: 99%

Strategies for Achieving Balance between Detonation Performance and Crystal Stability of High-Energy-Density Materials

Zong

et al. 2020

iScience

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Performance-stability contradiction of high-energy-density materials (HEDMs) is a long-standing puzzle in the field of chemistry and material science. Bridging the gap that exists between detonation performance of new HEDMs and their stability remains a formidable challenge. Achieving optimal balance between the two contradictory factors is of a significant demand for deep-well oil and gas drilling, space exploration, and other civil and defense applications. Herein, supercomputers and latest quantitative computational strategies were employed and high-throughput quantum calculations were conducted for 67 reported HEDMs. Based on statistical analysis of large amounts of physico-chemical data, in-crystal interspecies interactions were identified to be the one that provokes the performancestability contradiction of HEDMs. To design new HEDMs with both good detonation performance and high stability, the proposed systematic and comprehensive strategies must be satisfied, which could promote the development of crystal engineering of HEDMs to an era of theory-guided rational design of materials. ''materials genome'' approach, based on the theoretical calculations of six-member aromatic and

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Section: Strategy For Improving Detonation Performance Of High-energy-density Materials Performance Of Solid-state High-energy-density Mamentioning

confidence: 99%

Strategies for Achieving Balance between Detonation Performance and Crystal Stability of High-Energy-Density Materials

Zong

et al. 2020

iScience

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“…The impedance window matching technique was used to measure the detonation pressure of PlSEM, in an arrangement similar to that used for the detonation pressure measurement of RDX pressed charges [15]. The setup consisted of a 25 µm thick aluminium foil sandwiched between the flat surface of a cylindrical charge of PlSEM and a 10 mm thick polymethylmethacrylate (PMMA) window.…”

Section: Detonation Pressure Determinationmentioning

confidence: 99%

Detonation Parameters of PlSEM Plastic Explosive

Anastacio

Šelešovský

Künzel

et al. 2019

Cent. Eur. J. Energ. Mater.

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PlSEM is a plastic explosive based on RDX, PETN and a nonexplosive binder, and is used in linear shaped charges for demolition purposes. Its experimentally obtained detonation parameters are presented in the present paper. The detonation velocity was measured for cylindrical charges of various diameters, with and without confinement. The detonation pressure and particle velocity were determined using an impedance window matching technique, and cylinder tests were used to obtain the parameters of the JWL equation of state of the detonation products. Detonation velocities from 7.75 to 8.05 km·s -1 were obtained for unconfined charges with diameters from 4 to 8 mm, and from 8.15 to 8.24 km·s -1 for charges with 25 mm diameter. The experimentally determined detonation pressure was found to be 24.6 GPa.

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“…Despite DW velocity being a relatively easy measurement, the detonation pressure (or CJ pressure) was, and still is, one of the most relevant parameters of biggest relevance [4]. However, authors of [5] believe that the experimental determination of this parameter is not widespread and computational calculations are preferred over the experimental tests.…”

Section: Introductionmentioning

confidence: 99%

“…Internal methods permit the direct measurement of the DW parameters, such as the particle velocities (u P ) of the detonation products inside the explosive charge and the direct determination of CJ pressure (P CJ ). The former parameter and, consequently, the P CJ can be measured by the electromagnetic induction method [2,5] and the X-ray method [6]. The CJ pressure can be measured directly through the insertion of manganin [2,3,5,7] and/or polyvinylidene fluoride (PVDF) [3,8] pressure gauges into the sample of the explosive.…”

Section: Introductionmentioning

confidence: 99%

“…The external methods can be divided into three groups, defined by their measuring parameter: 1) measurement of the free surface velocities of an inert material (normally, a metallic foil); 2) determination of the velocity of the shock wave (SW) in a condensed inert material in contact with the explosive; and 3) direct determination of the induced pressure profile in an inert material. For 1), techniques such as electrostatic measurements of the SW velocity in PMMA barriers [2]; an array of electric pins connected to an oscilloscope [9]; using a streak camera to record argon-filled gaps [10], or the smear camera technique [11]; laser interferometric techniques [2], like Fabry-Perot [12], VISAR [13] and photonic Doppler velocimetry (PDV) [5,14,15] are used. Group 2) comprises methods such as streak cameras that can register images of a SW in water (aquarium test) [16], a moving copper grid in PMMA [9], or they can be connected to optical fibers that are embedded in a PMMA barrier [17]; the short circuit of composite carbon-resistors embedded in a PMMA slab [18]; recording of the pulse voltages, originated by the detonation electric effect [19], with oscilloscopes; and the photoelectric method [20], where an inert liquid emits radiation proportionally to the pressure that it is being applied to it.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of the Detonation Pressure of a PETN Based PBX with the Optical Active Method

Quaresma

Deimling

Campos

et al. 2021

Propellants Explo Pyrotec

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Detonation metrology is essential for the development of energetic materials, to characterize existing explosives, and to characterize materials behavior under high pressures. The optical active method (OAM), based on PMMA optical fibers (250 μm diameter) and their radiation transmission loss when shocked, was used to characterize the detonation wave (DW) and shock wave (SW) in inert barriers and applied to measure the detonation pressure in condensed explosives. The detonation velocity and detonation pressure of a PBX based on PETN (86 % PETN, 14 % Sylgard), known as Seismoplast were measured. The OAM with protected optical probes (POP) was used to determine the mean detonation velocity (7337 m s À 1 ), whereas the OAM with bare optical probes (BOP) was used to measure the induced shock velocities generated by Seismoplast on different thicknesses of PMMA (1-9 mm), aluminum and copper (1-7 mm). Based on the shock velocities at the interfaces between the explosive and the inert barriers, the CJ pressure of Seismoplast was determined as 21.2 GPa.

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A comparison of methods for detonation pressure measurement

Cited by 19 publications

References 32 publications

Strategies for Achieving Balance between Detonation Performance and Crystal Stability of High-Energy-Density Materials

Strategies for Achieving Balance between Detonation Performance and Crystal Stability of High-Energy-Density Materials

Detonation Parameters of PlSEM Plastic Explosive

Characterization of the Detonation Pressure of a PETN Based PBX with the Optical Active Method

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