摘要
高功率激光聚焦击穿液体介质,类似于聚焦区域发生了微爆炸。研究了激光聚焦击穿爆炸与水下微爆炸之间的相似性。采用高功率脉冲激光器、光学聚焦系统、高速摄像、测量水听器建立了激光击穿爆炸源的产生及爆炸气泡、爆炸声波特性测量系统。对不同参数激光聚焦击穿水、酒精、硅油等粘性液体,观测到了激光击穿爆炸冲击波、气泡脉动、气泡压缩冲击波辐射。通过对爆炸气泡高速图像序列的分析,得到了不同液体介质中爆炸气泡的脉动特征、冲击波强度、爆炸声波等特性规律。实验结果可为舰船生命力、舰船结构防护等水下爆炸气泡的研究提供参考。
The similitude was analyzed between the characteristics of explosion bubbles generated by laser-induced breakdown and detonator explosion in water. By combining a high power laser, an optical focus system, a high-speed camera and a hydrophone, a measurement system was developed to experimentally investigate the laser-induced breakdown in liquids such as water, alcohol, silicon in the cases of the different laser energy. Based on the developed measurement system, a series of laser-induced bubble characteristics were obtained, which included the image lists of explosion bubble dynamics, expansion and collapse, and the parameters of explosion bubble diameter evolvements, bubble expansion and collapse shock wave velocities and acoustic signal intensities.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2011年第6期641-646,共6页
Explosion and Shock Waves
基金
国家国防基金项目(9140A14060207JB11)
爆炸科学与技术国家重点实验室开放基金项目(KFJJ10-11M)
关键词
爆炸力学
爆炸气泡
激光击穿
激光聚焦
mechanics of explosion
explosion bubble
laser-induced breakdown
laser-induced
