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modal assurance criterion MAC

Standard

ECSS-E-ST-32-11C - Modal survey assessment (31 July 2008)

Definition

measure of the degree of correlation between two mode shapes

Notes

  • NOTE 1 The modal assurance criterion is defined as: where and are the two mode shapes.
  • NOTE 2 MAC = 1 indicates perfect correlation of the two mode shapes.
  • NOTE 3 MAC = 0 indicates no correlation of the two mode shapes.

Relations

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