Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Direction des Applications Militaires (DAM), 46500 Gramat, France.
Laboratoire d'Analyse et d'Architecture des Systèmes (LAAS-CNRS), Centre National de la Recherche Scientifique (CNRS), Institut National Polytechnique de Toulouse (INPT), Université de Toulouse, 7 Avenue du Colonel Roche, 31031 Toulouse, France.
Sensors (Basel). 2023 Jun 16;23(12):5635. doi: 10.3390/s23125635.
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.
本文提出了两种改进空气爆炸实验压力测量的方法，主要针对近距离爆炸进行研究，定义为距离小于 0.4 米的小尺度距离。首先，提出了一种新的定制压力探头传感器。传感器是一种压电式商用传感器，但探头材料已经过修改。该原型的动态响应是根据时间和频率响应建立的，包括在实验室环境、激波管和自由场实验中。实验结果表明，改进后的探头可以满足高频压力信号的测量要求。其次，本文提出了一种反卷积方法的初步结果，使用激波管确定铅笔探针传递函数。我们在实验结果上演示了该方法，并得出了结论和展望。
