FIELD: analyzing or investigating of materials.
SUBSTANCE: method comprises exciting several modes of natural vibration of the reference structure and the structure to be analyzed, determining one of the observation parameter for the reference structure and structure to be analyzed at the first point, determining observation parameter at the second point for each of the structures, and determining the mode of structure vibration at the second point as a ratio of the value of the observation parameter at this point to the value of the observation parameter at the first point. The defect is detected from the difference of natural mode of vibration at the second point of the reference structure and the structure to be analyzed.
EFFECT: simplified method.
2 dwg
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