中文摘要：

为研究低能量导爆索水下爆炸气泡脉动特性,采用高速摄影技术对低能量导爆索水下爆炸进行实验。研究图像数据发现,拍摄段的低能量导爆索水下爆炸首次气泡脉动形状基本保持圆柱形,从第二次气泡脉动开始,气泡脉动的形状变为不规则圆柱形,气泡外边缘模糊,这主要是低能量导爆索外壳碎片击穿气泡所致;第一次气泡脉动的周期为21.5 ms,最大直径为11.2 cm,第二次脉动周期为15.5 ms。在第一次气泡脉动过程中,气泡膨胀时间为15 ms,收缩时间为6.5 ms,膨胀时间比收缩时间长。

英文摘要：

In order to study the bubble pulsation characteristics of low energy detonating cord, an underwater explosion experiment was carried out by high-speed photography technology. The experimental results show that the bubble pulse shape in the shooting section remains a clindricality at the first bubbles pulsing time, and irregular cylinder from the second bubbles pulsing time. The outside edge of bubbles is blurry because of the effect from shell fragments. The first bubble pulsation period is 21.5 ms and the second is 15.5 ms. The maximum diameter of bubble is 11.2 cm in the first bubble pulsation period, in addition, the bubble growth time is 15 ms while the contraction time is 6.5 ms in the first bubble pulsation period. The bubble growth time is longer than the contraction time.