G030131 放射光CTならびに産業用X線CTによる疲労き裂観察とその比較([G03013]材料力学部門一般セッション(13):疲労とき裂)

抄録

In order to visualize fatigue cracks inside a specimen, computed tomography (CT) was carried out using synchrotron radiation at SPring-8 and industrial X-ray CT scanner. The images of the crack were reconstructed by both CTs under conditions as similar as possible. Refraction contrast effect is the major difference between reconstructed slice images by Synchrotron Radiation CT and industrial X-ray CT. The refraction contrast effect was prominent in the slice images of the Synchrotron Radiation CT, however it could not be observed in the image of the industrial X-ray CT. It is easier to evaluate the whole image of fatigue cracks by including the refraction contrast effect.