Non-Destructive quality control and determination of residual stresses in elements and members of machine-Building Structures using the methods of holography, Electron Speckle-Interferometry and Shearography

摘要

To provide the high-quality manufacture of structures is one of the most important scientific-technical problems which becomes more and more actual with a complication of structures. This problem is multi-sided and can be solved in several directions. Among them, the responsible role belongs to the development and wide application of advanced methods and equipment for a non-destructive control and determination of residual stresses, whose effectiveness is defined, first of all, by their reliability and efficiency. The E.O.Paton Electric Welding Institute has designed and manufactured small-sized devices, instruments and optical schemes which can be arranged on the objects being examined, not using a special vibroinsulation. In collaboration with the T.G. Shevchenko National University a small-sized thermoplastic camera has been developed, in which a new composition of a film of amorphous molecular semiconductors (AMS), which is deposited on a glass plate, is used for recording the holograms. One such plate with a coating allows recording of more than 1000 holograms without its replacement (record-erase cycle).