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利用纹影技术研究了炸药爆轰后驱动物质的变形过程。为了便于观察,待测物质选取为变形比较大的介质水。实验观察表明,在炸药爆轰作用下,筒状水的膨胀首先由雷管起爆端开始,形成了倾斜状、波浪形的界面。结果表明:阵面的波动破裂均从外界面开始,界面的不稳定性可能是导致其失稳并破碎的主要原因。实验还观察到炸药爆轰后不同延迟时间的物体从大块变成小块的发展过程。研究中克服了炸药爆轰产物发光对图像的影响,以及爆炸振动对光路的影响。研制了一种简易的触发探针,解决了外光源和炸药爆轰的同步问题。
The effect of detonation on the deformation of driving materials was studied by using the shadowing technique. In order to facilitate the observation, the material to be tested is selected as the medium with large deformation. Experimental observations show that under the detonation of explosives, the expansion of the tubular water begins with the initiation end of the detonator and forms an inclined, wavy interface. The results show that the fluctuating rupture of the wedge surface starts from the outer surface, and the instability of the interface may be the main reason that causes the instability and fracture. The experiment also observed the development of the objects with different delay time after the detonation of explosives changed from big block to small block. In the study, the influence of the explosive detonation product luminescence on the image and the impact of explosion vibration on the optical path were overcome. Developed a simple trigger probe to solve the synchronization of the external light source and explosives detonation.