https://doi.org/10.1051/epjconf/202023105008
Reconstruction on fast neutron CT for concrete structure inspection with a pixel-type detector by applying linear scanning method
1 RIKEN center for advanced photonics, RIKEN, Wako, Saitama, Japan
2 School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, China
3 J-PARC Centre, Japan Atomic Energy Agency, Naka-gun, Ibaraki, Japan
* Corresponding author: mingfei.yan@riken.jp
Published online: 11 March 2020
Concrete structure has been widely used in bridges and highways, however, its performance will be deteriorated after long term serving or suffering disaster. Since fast neutron has strong transmission ability and is sensitive to water content in the concrete structure, it can provide an effective probe to inspect the inner structure of concrete with non-destructive way. Thus, we propose a fast neutron imaging and reconstruction system of 3D CT for concrete structure inspection with Riken accelerator-driven compact neutron source (RANS) using a fast neutron pixel-type detector, which has 8×8 pixels. To have a good space resolution on the reconstructed image, a rotation + linear scanning method is devised and is used to collect the projection data from experiment or calculation. In this paper, reconstruction for a concrete object containing both iron bars and acrylic bars for simulation of water has been conducted. As a result, 3D image of 1cm diameter bar is reconstructed by the sparse reconstruction algorithm.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
