Abstract:
This research aims to develop an x-ray fluoroscopic system and a data acquisition technique for reconstruction of the computed tomographic (CT) images of test specimens. The image viewing system consisted of a fluorescent screen, a digital camera and a specimen turn table. Rotation of the turn table is controlled by a stepping motor and the developed software written in Visual basic 6.0 while the camera settings and operation are controlled by a computer via USB cable. Factors affecting the image quality are also investigated, including the camera and the x-ray machine settings, to obtain desired image quality. Up to 6 specimens of different materials and having different configurations are tested by taking fluoroscopic image each specimen every 1.8 degrees for a total of 100 images. The obtained CT image quality is found to be very satisfactory. The total processing time for each test specimen is approximately 7 minutes. However, for thicker specimens and specimens containing high density materials the processing time may be adjusted depending on the camera and the x-ray machine settings as well as type of the fluorescent screen. This research indicates future use of the developed system and technique for inspection of specimens.