抄録
In order to visualize a fatigue crack inside a friction stir welded plate, synchrotron radiation computed laminography (SRCL) was carried out at SPring-8. As the results of SRCL, the surface fatigue crack shape and its size were well in agreement with the observation by an optical microscope. Furthermore, it was clear that the crack inside the specimen was also observable m a non-destructive manner by reconstructing slice images at various depths. The fatigue crack propagation behavior inside the plate specimen could be investigated by SRCL without destruction of the specimen.
