Partial CT for in situ bridge NDE with 950 keV/3.95 MeV X-band linac source

Issue title: Proceedings from the 16th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2013)

Guest editors: Xavier Maldague and Toshiyuki Takagi

Article type: Research Article

Authors: Wu, Wenjing^{a; *} | Zhu, Haitao^a | Jin, Ming^a | Dobashi, Katsuhiro^a | Fujiwara, Takesi^a | Uesaka, Mitsuru^a | Kusano, Joichi^b | Nakamura, Naoki^b | Tanabe, Eiji^b | Sunaga, Hideyuki^c | Otake, Yoshie^c

Affiliations: [a] The University of Tokyo, Tokyo, Japan | [b] Accuthera Int., Tokyo, Japan | [c] Riken, Wako, Saitama, Japan | Université Laval, Canada | Tohoku University, Japan

Correspondence: [*] Corresponding author: Wenjing Wu, The University of Tokyo, Tokyo, Japan. E-mail: [email protected]

Abstract: Computed tomography system for in situ NDE of degradation bridges is under development, with portable 950 keV/3.95 MeV X-band linac as x-ray source. Collimator is adopted to reduce scattered X-ray noise and 3D model can be built from sectional images so that it becomes possible to evaluate mechanical characters of bridges referring to structural analysis with reduced stiffness. Furthermore, considering limitation of projection angle range during in situ scanning, reconstruction technique with incomplete projection data is studied with experimental data.

Keywords: X-band linac, CT, NDE, structural analysis, scattered X-ray noise

DOI: 10.3233/JAE-141844

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 45, no. 1-4, pp. 301-306, 2014