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

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 . Firstly, a new kind of custom-made pressure probe sensor is presented. The transducer is a piezoelectric commercial, but the...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2023-06, Vol.23 (12), p.5635
Main Authors: Lavayssière, Maylis, Lefrançois, Alexandre, Crabos, Bernard, Genetier, Marc, Daudy, Maxime, Comte, Sacha, Dufourmentel, Alan, Salsac, Bruno, Sol, Frédéric, Verdier, Pascal, Pons, Patrick
Format: Article
Language:English
Subjects:
deconvolution
Design
dynamic calibration
Dynamic response
Engineering Sciences
Experiments
Field study
Laboratories
Measurement
metrology
Pressure measurement
Pressure sensors
Pressure transducers
Sensors
shock tube
Signal processing
transfer function
Transfer functions
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Summary: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 . 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.
ISSN:1424-8220
1424-8220
DOI:10.3390/s23125635