PVDF传感器在爆炸近区超压测量中的应用研究

凝聚相炸药爆炸产生强冲击波、电磁脉冲和光热效应，爆炸近区测试环境非常复杂，常规压阻式硅压力传感器难于满足测试要求。为准确测量装药近区爆炸参数给工程防护结构的爆炸毁伤评估提供参考依据，基于PVDF压电薄膜制作压力传感器，采用分离式霍普金森压杆（SHPB）对自制传感器进行标定；进行TNT化爆试验对自制PVDF传感器测试效果进行考核，并提取试验结果与AutoDyn软件计算结果进行比较。对比表明，测量值与计算值偏差小于10%，爆炸近区超压的试验测量可采用防干扰处理后的PVDF压电传感器解决。

Application of PVDF sensors in shock wave measurement of near zone of explosion

Strong shock wave,electro-magnetic pulse and light-heat effect occur when condensational explosive explodes.Measurement circumstance is formidable in near zone of explosion.Conventional piezo-resistance silicon sensors can’t meet the measurement demand.In order to get the detonation parameters of the near zone of explosion and provide reference values for explosion damage assessment on protective structures,PVDF piezo-electric sensors were made and calibrated with a SHPB.The test of TNT explosion was conducted to examine the validity of the sensors.The difference between test data and calculations with AutoDyn was less than 10%.It was shown that a self-made PVDF piezo-electric sensor after anti-interference treatment is suitable for measurement of shock wave in near zone of explosion.