【作者】 张显丕； 刘建湖； 潘建强； 毛海斌； 张静；

【Author】 Xianpi Zhang;Jianhu Liu;Jianqiang Pan;Haibin Mao;Jing Zhang;China Ship Scientific Research Center;

【机构】 中国船舶科学研究中心；

【摘要】 压力是水下爆炸测试的一个关键参数,但在实际测量时,由于受到敏感元件尺度效应、固有频率及安装方式等因素的影响,使输出波形与输入波形之间产生了一定的差异,从而直接影响到测量结果的可靠性和准确性。本文针对水下爆炸自由场压力的压电式测量中的传感过程,从信号的声学及力学传递机理出发,分析压力场接收及转化过程中各因素对波形的影响规律,研究水下爆炸作用下压力敏感元件的传感特性,在频域内建立了输入输出传感函数,并通过试验进行了验证。更多还原

【Abstract】 The pressure measurement is very important to the research on the underwater explosion.But some differences between the output wave and input wave are usually unavoidable due to the size,nature frequency and the fitting of the sensitive elements that will accordingly reduce the reliability of measurement results.This paper focuses on the sensing process of underwater explosion free field pressure using piezoelectric transducers.Based on the transfer mechanism of signal in acoustics and mechanics,the influences of varies factors on wave shape during the establishment and transform of pressure field are analyzed,the sensing characteristics of sensitive elements subjected to underwater explosion pressure are studied.Finally,the transfer functions validated by experiment.更多还原