FIELD: mechanical engineering, measurement technology. SUBSTANCE: to provide endurance strength testing of fan blades they are packing to stack so its defects variations would be distributed uniformly in stack. Endurance strength testing of stack is making by symmetrical loading using in testing cycle. Mean value of endurance strength and endurance limit dispersion are determining for stack set to calculate statistical distribution of endurance limit value for fan wheels assembly. EFFECT: more simple method for fan wheel endurance strength statistical characteristics determining. 5 dwg
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