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By mounting a network of accelerometers (or other devices for recording movements of a structure) on a structure, it is possible to determine the vibratory behaviour of a structure, in particular the structure’s frequencies and natural modes of vibration.

Identifying this information in an entirely non-destructive way, when combined with a numerical simulation model, allows an estimate to be made of the mechanical characteristics of the structure, its integrity and its points of greatest structural weakness.

Although it involves greater complexity when it comes to processing the results, this technique is becoming increasingly widespread in the mechanical characterisation of structures, as it is very useful in the calibration of numerical models.

There are currently experimental campaigns that apply this technique in the continuous monitoring of structures.