Non-destructive testing of carbon-carbon composite material forgings and details for the reusable «Buran» spaceship

The complete material and detail quality control is a requirement to the reliability of products operating in the conditions of repeating space flights. Finished parts can only be examined by the non-destructive control methods. Several methods were worked out to control the carbon-carbon composite material. The acoustic shadow control method is one of them. It is the most effective method for the production conditions. The other control methods (impedance technique, free oscillation technique) allow to control the details quality having the one-sided access to the object under control.