Method of measurement of the acting forces in a structure and/or the temperature in the structure

A method of measuring the acting forces and/or the temperature in first and second measurement regions of a structure, the method comprising:

• an addition step in which a first element is added to the structure in the first measurement region to create the existence of a first local vibration mode in the measurement region formed collectively by the structure and the first element, and in which a second element is added to the structure in the second measurement region to create the existence of a second local vibration mode in the second measurement region formed collectively by the structure and the second element
• a step of analysis in which a first change of resonance frequency associated with the first local vibration mode in response to a change in the acting forces and/or the temperature in the first measurement region is determined, and in which a second change of resonance frequency associated with the second local vibration mode in response to a change in the acting forces and/or the temperature in the second measurement region is determined;
• an excitation step in which the structure comprising the first and second elements is excited by a signal emitter, the signal emitter being spaced away from the first and second elements;
• a measurement step in which a receiver measures a variation produced in the resonance frequency associated with each of the first and second local vibration modes, the receiver being spaced away from each of the first and second elements;
• and
• a calculation step in which the acting forces and/or the temperature of the structure in the first measurement region is determined based on the measured variation produced in the resonance frequency associated with the first local vibration mode and in which the acting forces and/or the temperature of the structure in the second measurement region is determined based on the measured variation produced in the resonance frequency associated with the second local vibration mode.