High-speed X-ray radiography for experiments in impact dynamics using high-power X-ray tube, cesium iodine scintillator and laboratory optical camera

Jan Šleichrt, Jan Falta, Tomáš Fíla
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Abstract

X-ray radiography and computed tomography have become well-established methods for investigation of internal structure of objects and for defectoscopy. Recently, the methods have even been used for in-situ analysis of materials under mechanical loading. Although the techniques would be very suitable for analysis during dynamic events, their application is constrained by typical achievable frame rates. Therefore, fast imaging is usually limited to facilities providing sufficient flux like particle accelerators. In this paper, we test imaging performance of a laboratory-based setup with a high-power X-ray tube, a scintillation panel, and an optical camera. Fast-rotating object and typical specimens for impact testing are irradiated with different power settings and quality of captured images is evaluated and analyzed. It is found out that the system can be successfully used for imaging at several hundred frames per second allowing for inspection of slow impact dynamics experiments.
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冲击动力学实验用高功率x射线管、铯碘闪烁体和实验室光学相机的高速x射线照相
x射线摄影和计算机断层摄影已经成为研究物体内部结构和缺陷检查的成熟方法。最近,这些方法甚至被用于材料在机械载荷下的原位分析。尽管这些技术非常适合动态事件期间的分析,但它们的应用受到典型可实现帧率的限制。因此,快速成像通常仅限于提供足够通量的设备,如粒子加速器。在本文中,我们测试了基于实验室的高功率x射线管,闪烁面板和光学相机的成像性能。对快速旋转物体和典型冲击试样进行不同功率辐照,并对捕获图像的质量进行评价和分析。结果表明,该系统可以成功地用于每秒数百帧的成像,从而可以检测慢冲击动力学实验。
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