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crankshafts restored by the method of electrometallization of gas-thermal coatings at

the enterprise "Gazothermic", to assess the quality of the protective coatings at the

enterprise "Vulkan", were used in the production subdivision "Locomotive Depot

Lviv-Zapad" of the regional branch "Lviv Railway" to assess the condition of tanks

of locomotives and frames of carts of locomotives, development of methods of

estimation of mechanical characteristics of materials of pipelines and tanks at

Ukrtransna, as well as for evaluating the results of vibration shock treatment of

metals at Kyiv Academic University.

Keywords: diagnostics, non-destructive testing, acoustic wave velocity, surface

acoustic waves, laser interferometry, piezoelectric transducers.