4. Modal testing
The modal testing stage consists of estimating a set of FRF of the structure by applying well-chosen dynamic forces and measuring its vibratory responses. The number of points at which the forces are applied and the responses measured can vary from 1 to several dozen, or even several hundred (particularly for measurements carried out using a scanning laser vibrometer).
Test quality directly affects the credibility of modal identification results, so it's essential to design and implement modal tests with the utmost care.
4.1 Test categories
The following test categories are distinguished according to the number of forces applied and responses measured:
SISO = Single Input Single Output:...
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Modal testing
Modal identification
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