FIELD: testing equipment. SUBSTANCE: method involves cutting out a specimen from one blade of used set of blades, taking a skew section and measuring changes in microhardness of surface layer in length. Said microhardness changes in blades and specimen are determined relative to microhardness of middle layer of blades in order to determine endurance of the entire set of blades. EFFECT: higher efficiency, quick and easy determination of endurance of engine blades for their further safe operation on engine. 3 dwg
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