Experimental Research of Expanding Fracture of Cylinder Shell by High Speed Optical Photography
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摘要: 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。Abstract: 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 photo -electric 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.
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图 4 转镜相机拍摄的爆轰实验图像
Figure 4. Frame images of a detonation experiment photographed by rotating mirror camera
图 5 光电相机拍摄的爆轰实验图像
Figure 5. Frame images of a detonation experiment photographed by photo-electric camera
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