摘要
为了寻求具有宽频特征的燃烧型烟火水声药剂材料,基于爆炸声具有水声频带较宽的特点,将Mg4Al3/Cu O/Pb3O4爆响剂引入水下。首先,研究Mg4Al3/Cu O/Pb3O4爆响剂中Pb3O4组分含量变化对A声压级的影响规律,并优选出A声压级最高的药剂,制成样品,并在水下点燃,利用水声测试系统研究其声频特征。结果表明,Mg4Al3/Cu O/Pb3O4爆响剂A声压级随着Pb3O4含量的增加而增大,当外加Pb3O4的质量分数为75%～100%时,A声压级最高,可达到108.3 d B。将此Mg4Al3/Cu O/Pb3O4爆响剂与烟火药制成样品,在水下点燃,产生的水声频率覆盖0～8 000 Hz,且出现锯齿形峰,0～1 000 Hz范围内最大声压级为116 d B。因此,Mg4Al3/Cu O/Pb3O4爆响剂可作为一种潜在水声干扰材料。
In order to obtain a combustible pyrotechnic material with a characteristic of broadband, which can be used as an underwater acoustic agent, Mg4Al3/CuO/Pb3O4 explosive agent was studied basing on the wide frequency band of underwater detonation. Effect of Pb3O4 content in Mg4Al3/CuO/Pb3O4 explosive agent on the A-weighted sound pressure level （SPL） , was researched, and agent with the highest A-weighted SPL was selected. The sample made from the optimal agent was lighted underwater, and the acoustic features were analyzed by an acoustic test system. Results show that A-weighted SPL of the Mg4Al3/CuO/Pb3O4 04 explosive agent increases with the increasing of Pb3O4 content. When mass fraction of Pb3O4 is 75% -100%, its SPL is the highest, which can reach to 108.3 dB. When samples made from the explosive agent with the highest SPL and the pyrotechnicis lighted underwater, the acoustic frequency of detonation could cover from 0 to 8 000 Hz, jagged peaks appears, and the highest SPL is 116 dB in the range of 0 to 1 000 Hz. So pyrotechnic can be used as a potential acoustic jamming material.
出处
《爆破器材》
CAS
2016年第4期9-13,共5页
Explosive Materials
