基于脉冲激光的发射药参数快速检测方法  

Rapid detection method of propellant parameters based on pulsed laser

作　　者：吴清潮 吴坚[1] WU Qingchao;WU Jian(State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China;State Grid Xiamen Power Supply Company,Xiamen 361001,China)

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,西安710049 [2]国网厦门供电公司,厦门361001

出　　处：《激光技术》2024年第2期171-179,共9页Laser Technology

摘　　要：为了验证基于脉冲激光作用的发射药能量性能参数快速测量方法的有效性,采用实验方法研究了脉冲激光作用下单、双、三基发射药和单晶冰糖的冲击波及等离子体特性,得到了激光参数对脉冲激光作用过程的影响规律以及单基发射药与单晶冰糖的冲击波、等离子体图像差异。结果表明,单基发射药的冲击波及等离子体膨胀特性主要受其化学反应释能的影响,而冰糖主要受激光辐照度的影响;采用支持向量机回归算法,建立了单、双、三基发射药激光作用下的冲击波特征速度与其火药力、爆热、爆温的线性定标模型,得到的决定系数R^(2)值分别为0.9912、0.9998、0.9999。该方法对发射药火药力、爆热及爆温有较好的预测能力,为脉冲激光与含能材料作用的研究提供了参考。In order to verify the applicability of the rapid measurement method of energy performance parameters of propellant based on pulsed laser ablation,a pulsed laser interaction platform with energetic materials and an experimental platform for transient diagnoses such as shockwave and plasma image were firstly established.Based on this platform,the shockwave and plasma characteristics of single,double,and triple base propellant and monocrystal rock sugar under pulsed laser ablation were studied experimentally.The influence of laser parameters on the ablation process of pulse laser and the difference of shockwave and plasma image between the single base propellant and monocrystal rock sugar was obtained.The results show that the shockwave and plasma expansion characteristics of single base propellant are mainly affected by the chemical reaction energy release of energetic substances,while that of rock sugar is mainly affected by laser irradiance.Furthermore,taking single,double,and triple base propellants as samples,based on shockwave propagation distance parameters and laser energy parameters,the linear calibration models of shockwave characteristic velocity and its explosive force,explosive heat,and explosive temperature were established by using support vector machines regression algorithm.The determinate coefficient R^(2) values were 0.9912,0.9998,and 0.9999,respectively.The results show that this method predicts the explosive force,explosive heat,and explosive temperature of the propellant well and provides a reference for the study of the interaction between pulsed laser and energetic materials.

关 键 词：激光技术 快速检测 脉冲激光作用 发射药 冲击波 

分 类 号：TN24[电子电信—物理电子学] O348.11[理学—固体力学]