Fast synchrotron X-ray tomography study of the packing structures of rods with different aspect ratios  

作　　者：张晓丹 夏成杰 肖相辉 王宇杰 

机构地区：[1]Department of Physics, Shanghai Jiao Tong University [2]X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, IL 60439, USA

出　　处：《Chinese Physics B》2014年第4期373-376,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11175121);the National Basic Research Program of China(GrantNo.2010CB834301);supported by the U.S.DOE(Grant No.DE-AC02-06CH11357)

摘　　要：We present a fast synchrotron X-ray tomography study of the packing structures of rods with different aspect ratios. Utilizing the high flux of the X-rays generated from the third-generation synchrotron source, we can complete a high- resolution tomography scan within a short period of time, after which the three-dimensional （3D） packing structure can be obtained for the subsequent structural analysis. The image phase-retrieval procedure has been implemented to enhance the image contrast. We systematically investigated the effects of particle shape and aspect ratio on the structural properties including packing density and contact number. It turns out that large aspect ratio rod packings will have wider distributions of free volume fraction and larger mean contact numbers.We present a fast synchrotron X-ray tomography study of the packing structures of rods with different aspect ratios. Utilizing the high flux of the X-rays generated from the third-generation synchrotron source, we can complete a high- resolution tomography scan within a short period of time, after which the three-dimensional （3D） packing structure can be obtained for the subsequent structural analysis. The image phase-retrieval procedure has been implemented to enhance the image contrast. We systematically investigated the effects of particle shape and aspect ratio on the structural properties including packing density and contact number. It turns out that large aspect ratio rod packings will have wider distributions of free volume fraction and larger mean contact numbers.

关 键 词：synchrotron X-ray imaging TOMOGRAPHY rod packing structure 

分 类 号：O434.1[机械工程—光学工程]