Study on Sensor Vibration Reduction Installation Structure with Damping Material of Ground Reflection Pressure Measurement

Abstract

In blast field test, strong mechanical shock and vibration affect the output of blast pressure sensors. To avoid this phenomenon, a pressure sensor vibration reduction installation structure was designed for the measurements of ground reflection pressure. The damping material was used in the installation structure. And certain blast field test had been carried out. The data from the field blast test was compared to transducers with vibration reduction and transducers without vibration reduction. The results show that the obvious effect of the vibration reduction can eliminate vibration interference. And it is suitable for the measurements of shock wave over-pressure in blast field test.

The influence of sensor installation angle on explosive shock wave overpressure test

“…Such as: Li Chen, Kong Deren and others based on the impact of shock and vibration on the measurement of shock wave pressure sensors, designed a sensor installation structure for ground reflection pressure measurement, and carried out related simulation experiments. The analysis of the experimental results shows that the sensor installation structure can effectively suppress the impact of mechanical shock on the pressure sensor measurement, and is suitable for the shock wave overpressure measurement in the explosive field [6]. Zhang Xianpi, Pan Jianqiang and others have studied in detail the influence of the sensitive crystal package structure, the incident azimuth angle of the relative sensitive surface of the shock wave and the length of the transmission wire on the waveform for several influencing factors of the underwater explosion free field pressure sensor.…”