Development of the technologies of ultrasonic tomography for the engineering diagnostics of structural materials

We describe the achievements of the Karpenko Physicomechanical Institute of the Ukrainian National Academy of Sciences in the development of new methods and tools for the ultrasonic computer tomography of structural materials in the last decade. The results of investigations of thick-plate products with welded joints performed by using a transmission ultrasonic computer tomograph are presented. We also describe the technologies of evaluation of the space distribution of scattering power of the metal in thick-walled pipelines by recording scattered ultrasonic signals with the help of an ultrasonic computer tomograph. These technologies prove to be promising for implementation at the objects of nuclear power plants. The results of experimental testing of the technologies of passive ultrasonic computer tomography are discussed.