Application of Photon-Counting X-ray Computed Tomography to Aluminum-Casting Inspection
- 1 Graduate School of Science and Technology, Shizuoka University, Hamamatsu,Japan; Hamamatsu TSC, Chuo Hatsumei Institute, Hamamatsu, Japan
- 2 Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Japan;Research Institute of Electronics, Shizuoka University, Hamamatsu, Japan
- 3 Research Institute of Electronics, Shizuoka University, Hamamatsu, Japan
- 4 Hamamatsu TSC, Chuo Hatsumei Institute, Hamamatsu, Japan
- 5 Hamamatsu TSC, Chuo Hatsumei Institute, Hamamatsu, Japan
- 6 Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Japan;Research Institute of Electronics, Shizuoka University, Hamamatsu, Japan
Abstract
One of the issues in the aluminum-alloy die casting industry is the space occurring inside the casting, and the improvement of the verification technology is expected. The purpose of this research is to seal holes inside the aluminum metal by resin and verify them by photon-counting X-ray computed tomography (CT) using an energy-discrimination 64- channel cadmium-telluride (CdTe) line detector. Moreover, it is important to estimate the image of the effective atomic number and the electronic density by the energy mapping of the attenuation coefficient utilizing photon-counting X-ray CTto distinguish both the aluminum metal and the resin filler in the aluminum hole. As a result, the energy discrimination of the resin filler in the space of aluminum casting has been attained. We could observe the atomic number image utilizing dual-energyX-ray CTmethod with the 64-channel CdTe photon-counting detector.
- Y. Tomita, Y. Shirayanagi, S. Matsui, T. Aoki and Y. Hatanaka, “X-ray Color Scanner with Multiple Energy Discrimination Capability,” Proceedings of the SPIE, Vol. 5922, No. 3, 2001, pp. 291-293.
- W. Zou, T. Nakashima, Y. Onishi, H. Morii, Y. Neo, H. Mimura and T. Aoki, “Soft-Tissue Material Properties under Large Deformation: Strain Rate Effect,” Proceedings of the 26th Annual International Conference of the IEEE EMBS, San Francisco, 1-5 September 2004, pp. 2758-2761.
- R. Brooks and G. Chiro, “Principles of Computer Assisted Tomography (CAT) in Radiographic and Radioisotopic Imaging,” Physics in Medicine and Biology, Vol. 21, 1976, pp. 689-732.
- W. Zou, T. Nakashima, Y. Onishi, A. koike, B. Shinomiya, H. Morii, Y. Neo, H. mimura and T. Aoki, “Atomic Number and Electron Density Measurement Using a Conventional X-ray Tube and a CdTe Detector,” Japanese Journal of Applied Physics, Vol. 47, No. 9, 2008, pp. 7313. doi:10.1143/JJAP.47.7317
- G. Matsumoto, Y. Imura, H. Morii, A. Miyake and T. Aoki, “Analysis of Artifact with X-ray CT Using Energy Band by Photon Counting CdTe Detector,” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 621, No. 1-3, 2010, pp. 292-294. doi:10.1016/j.nima.2010.05.056