Dual-plane ultrafast limited-angle electron beam x-ray tomography
Dual-plane ultrafast limited-angle electron beam x-ray tomography
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DOI：
10.1016/j.flowmeasinst.2009.12.001
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发表时间：
2010-09-01
影响因子：
2.2
通讯作者：
Hampel, U.
中科院分区：
文献类型：
--
作者：
Bieberle, M.;Schleicher, E.;Hampel, U.
电子束X射线断层摄影是一种成像技术，其可以以高达每秒10，000帧的帧速率提供具有约1 mm空间分辨率的感兴趣对象的横截面图像。作为一种非侵入性的方法，它特别适合于研究多相流。为此，我们设计了一个实验性的有限角度扫描设置，利用线性光束偏转产生射线投影。该装置被用于在不同的液体和气体流速下操作的实验流动回路中的气液流动的研究。电子束断层扫描图像进行了比较，与丝网传感器的图像数据。后者是一种快速但侵入式成像设备，通常用于气液流成像，并实现相当的帧速率，但空间分辨率较低。作为一个新奇的，我们实现了一个双平面有限角度的电子束X射线断层扫描，使我们能够获得信息的相速度，使用互相关数据分析。(C)2010爱思唯尔有限公司保留所有权利。
Electron beam x-ray tomography is an imaging technique, which can provide cross-sectional images of an object of interest with about 1 mm spatial resolution at frame rates of up to 10,000 frames per second. As a non-intrusive method it is especially suited for studying multiphase flows. For this purpose we devised an experimental limited-angle scan setup which utilizes linear beam deflection to generate radiographic projections. This setup was employed in the study of gas-liquid flow in an experimental flow loop operated at different liquid and gas flow rates. Electron-beam tomography images were compared with image data of a wire-mesh sensor. The latter is a fast but intrusive imaging device which is commonly used in gas-liquid flow imaging and achieves comparable frame rates but at lower spatial resolution. As a novelty we implemented a dual-plane limited-angle electron beam x-ray tomography which allows us to gain information about the phase velocities using cross-correlation data analysis. (C) 2010 Elsevier Ltd. All rights reserved.