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Article Dans Une Revue Sensors Année : 2023

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

Maylis Lavayssière
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Alexandre Lefrançois
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Marc Genetier
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Sacha Comte
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Alan Dufourmentel
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Bruno Salsac
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Frédéric Sol
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Pascal Verdier
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Résumé

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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Dates et versions

hal-04174149 , version 1 (31-07-2023)

Identifiants

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Maylis Lavayssière, Alexandre Lefrançois, Bernard Crabos, Marc Genetier, Maxime Daudy, et al.. Toward Improvements in Pressure Measurements for Near Free-Field Blast Experiments. Sensors, 2023, 23 (12), pp.5635. ⟨10.3390/s23125635⟩. ⟨hal-04174149⟩
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