爆轰加载下柱壳膨胀断裂的超高速光电摄影实验研究

Experimental Research of Expanding Fracture of Cylinder Shell by High Speed Optical Photography

随着超快物理实验研究的开展,急需建立高时空分辨的测量设备以研究高能产物的运动特性。目前,转镜高速分幅摄影相机的时间分辨力已经不能完全满足需求。因此,研究具有更高时间分辨能力的超高速光电分幅相机具有重要的意义。借助自研的超高速光电分幅相机,进行了爆轰加载下的柱壳膨胀断裂实验,同时使用转镜相机进行测量。实验结果表明,光电相机的消动态模糊能力更强,拍摄效果更好,而转镜相机拍摄的幅数更高。根据该结果,建议将两种相机配合使用,以更好地对物理过程进行测量。

With the development of techniques in the ultrafast physics experiment,there is an urgent need to fabricate a diagnostic equipment with a sufficiently high temporal and spatial resolution to study the characteristics of high energy products.As the resolution of the currently used ultra-high speed rotating mirror photography cannot meet the needs of the experiment,the ultra-high speed photoelectric camera has attracted increasingly greater attention due to its much higher resolution achieved.In our experiment the photo-electric and rotating mirror camera was used to investigate expanding fractures of the cylinder shell.The results show that the photo quality obtained by the photo-electric camera is greatly improved because this camera has a greater ability to eliminate motion blur during the experiment,and is capable of taking more photos.Thus we propose to use two cameras jointly so as to gain a better understanding of the physical process under investigation.