内爆加载下微喷微层裂物质全过程诊断方法

Micro jet and spallation problem in implosion loading is one of the core issue in weapon physics research, and is also one of the hot issues in impact dynamics research. But the currently relevant diagnostic technique can not yet meet the demand, especially lacking of embedded and whole process diagnosis technology suitable for implosion loading, which severely restricted the formation and evolution mechanism research of the micro jet and spallation material, and it is really a bottleneck in impact dynamics research...This project proposes a whole process diagnosis methods for wide density domain of micro jet and spallation material: first, a new type of cavitated Asay momentum sensor was designed, which integrating Asay foil, Asay window and PDV, to realize the whole process measurement of micro jet and spallation material by embedded, single point coaxial test method; Second, the method of segmented data derivation combined with numerical simulation was put forward to realize the density inversion of micro jet and spallation materia; Finally, combination diagnosis was designed to verify the test results, calibration experiment was designed to verify the density inversion results. This project intends to focus on solving the problem of the fusion of the three kinds of test techniques and the effectiveness of the test results, the problem of the density inversion method establishment and the accuracy of the inversion results. Through the establishment of the cavitated Asay momentum sensor test technology in this project, the vacancies of the whole process diagnostic techniques for micro jet and spallation materia will be made up, and it provides a new kind of embedded and point diagnosis method for weapon physics research.

内爆加载下的微喷微层裂问题，是武器物理研究关注的核心问题之一，也是冲击动力学研究的热点问题之一。但目前内爆加载中的全过程原位诊断技术不足，严重制约了微喷微层裂物质的形成及演化发展过程机理研究，是该研究方向的瓶颈之一。..本项目提出一种宽密度域微喷微层裂物质的全过程测试诊断方法：首先，设计一种融合Asay膜、Asay窗、PDV三种测试技术的全新空腔式Asay动量传感器，采用嵌入式、单点同轴的测试方法实现对微喷微层裂物质的全过程测量；第二，提出数据分段处理结合数值模拟校正的解读方法，实现微喷微层裂物质的密度反演；最后，设计联合诊断实验和标定实验分别验证测试结果和密度反演结果。重点解决三种测试技术融合及测试结果的可靠性问题、密度反演方法及结果的准确性问题。通过本项目诊断方法的建立，将弥补目前微喷微层裂物质全过程诊断技术的空缺，为武器物理研究提供一种全新的嵌入式点位全过程测试诊断方法。

内爆加载下的微喷微层裂问题，是国防重要关键武器物理研究关注的核心问题之一，也是冲击动力学研究的热点问题之一。本项目针对内爆加载下的宽密度域微喷微层裂物质密度演化历程研究的测试瓶颈问题，提出了一种空腔式结构的Asay动量传感器，有效融合Asay膜、Asay窗、激光干涉测速三种测试技术，发展出宽密度域微喷微层裂物质的单点同轴全过程动量测试能力。..本项目在三种测试技术融合机理方面，结合数值模拟和实验验证分析了空腔式Asay动量传感器的测试响应机理，实现了Asay膜与Asay窗功能的融合，证明了空腔式Asay动量传感器两段测试信号与常规Asay膜、Asay窗测试信号的一致性；并进一步通过多种测试界面方案融入激光干涉测速信号，实现了从飞片启动并经历宽密度域物质区域的速度历程单点同轴全过程测量。数据分析方面，针对传感器接力式信号特点，建立了密度信息的分段式定量提取方法，Asay膜测试时段采用动量守恒密度反演法、Asay窗测试时段采用疏松介质假设密度反演法。实验技术方面，完成了常规Asay膜、常规Asay窗的密度标定，分别给出了测量精度，并对比证明了二者与空腔式Asay动量传感器对应测试时段信号的一致性；最后设计完成了联合诊断实验，获取了各测试时段有效测试信号，对比验证了空腔式Asay动量传感器的宽密度域微喷微层裂物质单点同轴全过程测试能力。. 本项目研究成果极大地推进了动量传感测试技术的发展，目前已建立了8测点空腔式Asay动量传感器光学外差测试系统，并已初步成功应用于国防重要关键武器的某些分解性爆轰实验中，克服了传统动量传感测试中因多点非同轴测量方式缺陷带来的测试结果可信度低问题，为重要大型爆轰实验中特定区域微喷微层裂物质密度演化历程机理研究提供了一种更加高效可靠的测试手段。