An Overview of Methods for Blast Load Testing and Devices for Pressure Measurement

Draganić, Hrvoje; Varevac, Damir; Lukić, Sanja

doi:10.1155/2018/3780482

Cited by 16 publications

(6 citation statements)

References 83 publications

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“…Although electrical testing can record the entire shock wave process, the strong mechanical vibrations, thermaleffects, and electromagnetic interference generated in the explosion field can affect the stability and accuracy of the sensor output results [14]. Moreover, although equivalent targets are inexpensive and easy to implement, their quantification is poor in actual tests.…”

Section: Introductionmentioning

confidence: 99%

Design of device for testing the energy of explosion shock waves based on a lever-type cutting energy-absorbing structure

Luo,

Qi,

Zhang

et al. 2023

Meas. Sci. Technol.

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Explosion shock waves are the main cause of target destruction when ammunition explodes. Parameter testing of these waves is important. Traditional equivalent testing methods exhibit limited quantification capabilities and are exclusively applicable to near-field shock wave testing. In this study, a testing device was designed to quantitatively assess shock wave energy. The designed testing device consists of an energy conversion structure, energy absorbing element (EAE), and a package shell. The cutting energy absorption method is used to absorb the explosion shock wave energy, and the cutting tool and lever structure are combined to improve the sensitivity. The variation of the velocity of the energy conversion structure with its geometric size was obtained through theoretical formulas and numerical simulations. The EAE was designed with rigid polyurethane foam. Different cutting areas and cutting depths are compared to obtain the best design of cutting parameters. The feasibility of the testing device was evaluated by explosion test. The applicable range of the scaled distance for the testing device was found to be 1.5–2.5 m kg−1/3. The testing device has the advantage of obtaining effective test results when the direction of the explosion center is unknown. The proposed testing device offers a new technical method for quantitatively evaluating the damage power of explosion shock waves in complex environments.

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Section: Introductionmentioning

confidence: 99%

Design of device for testing the energy of explosion shock waves based on a lever-type cutting energy-absorbing structure

Luo,

Qi,

Zhang

et al. 2023

Meas. Sci. Technol.

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“…The Norwegian Defense Research Establishment has led an investigation into pencil probe PCB Piezotronics 137A23 misalignment between +10° or −10° that can lead to an overestimation of the peak overpressure of less than 13% in the case of small charges, but that can reach 30% for larger charges [ 6 ]. Draganić et al provide an overview of the devices for pressure measurement, along with a comparison of experimental methods is well performed by [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Toward Improvements in Pressure Measurements for Near Free-Field Blast Experiments

Lavayssière,

Lefrançois,

Crabos

et al. 2023

Sensors

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This paper proposes two ways to improve pressure measurement in air-blast experimentations, mostly for close-in detonations defined by a small-scaled distance below 0.4 m.kg−1/3. Firstly, a new kind of custom-made pressure probe sensor is presented. The transducer is a piezoelectric commercial, but the tip material has been modified. The dynamic response of this prototype is established in terms of time and frequency responses, both in a laboratory environment, on a shock tube, and in free-field experiments. The experimental results show that the modified probe can meet the measurement requirements of high-frequency pressure signals. Secondly, this paper presents the initial results of a deconvolution method, using the pencil probe transfer function determination with a shock tube. We demonstrate the method on experimental results and draw conclusions and prospects.

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“…This paper focused on numerical calculations of pressure wave parameters, especially overpressure of the blast pressure wave. There are many suggested solutions for the prediction of blast wave parameter studies (Karlos & Solomos, 2013), (Draganić et al, 2018), (Karlos et al, 2016), (Swisdak, 2020). These are based either on theoretical analysis, numerical calculations or many experimental tests.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Mathematical Relations for Calculation of Explosion Wave Overpressure

Jankura

Zvaková

Boroš

2020

PNS

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The explosion of an explosive system causes primary and secondary effects on people and objects near its site. The most devastating is the pressure effect of the explosion, especially the overpressure. Individual parameters of pressure wave (overpressure size, duration impulse) can be determined by mathematical or virtual modeling or can also be measured under real conditions. The authors focused on the parameters of the positive phase of the shock wave propagating from the source of the explosion towards the object. The article covers the description and analysis of selected mathematical relations, which are used to determine the magnitude of the explosion overpressure. The results are based on selected formulas. The source of the explosion referred in the study is an explosive system containing a reference explosive trinitrotoluene (TNT). TNT is a military explosive that is used as a reference explosive in technical standards dedicated to the certification of explosion-proof elements, and at the same time, a TNT equivalent is known to allow the mass of an explosive charge to be recalculated. The results obtained by mathematical modeling according to individual approaches have been compared and the possibilities of using computational models in the area of security management and education of security managers have been identified. The results of the study confirm that prediction of pressure wave parameters at different distances and weights can assist security managers in creating attack scenarios and designing a suitable object protection system.

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An Overview of Methods for Blast Load Testing and Devices for Pressure Measurement

Cited by 16 publications

References 83 publications

Design of device for testing the energy of explosion shock waves based on a lever-type cutting energy-absorbing structure

Design of device for testing the energy of explosion shock waves based on a lever-type cutting energy-absorbing structure

Toward Improvements in Pressure Measurements for Near Free-Field Blast Experiments

Analysis of Mathematical Relations for Calculation of Explosion Wave Overpressure

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