| 摘要 |
PURPOSE:To observe a crack, deterioration, change of structure of the inner part of refractories in detail, by scanning a necessary cross section of the refractories plural times changing a scanning direction by a radiant ray and composing by operating a picture of the cross section from the intensity distribution. CONSTITUTION:A pair of an X-ray tube 12 and an X-ray detector 16, is moved in one body along a straight line 5 so as to pass a beam 14 of the tube 12 through an aimed cross section 2 of a firebrick 1. Detected value from the detector 16 is stored in a memory correspondingly to moving distance from starting point of scanning. When the first scanning of the section 2 is finishd, a pair of a radiant rays irradiation apparatus 11 and the detector 16, is rotated centering around the firebrick 1 on an extension face of the section 2 and the same scanning is carried out changing the direction of the beam 14. A reverse projection image is made from the intensity of the radiant ray stored in the memory by repeating this operation and a picture of the cross section is obtained overlapping said image by an operation processing apparatus. |
