The present paper reports an investigation into the effect of bending and torsional vibrations on the torsional angle measurements given by an optical laser torquemeter, already described at the ICEM12 (2004). The aim was to demonstrate that vibrations present do not have an excessive effect on the torque measurements, due to the intrinsic operating characteristics of the torquemeter. In order to render the device able to detect such vibrations, its structure and the signal acquisition and processing system were modified. High magnitude vibrations, found only rarely in a common rotating system, were then generated artificially.

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