Cancellation of Mass-Loading Effects of Transducers and Evaluation of Unmeasured Frequency Response Functions

Measurement of Damping in Structures by the Power Input Method

“…For methods employing piezoelectric transducers, additional steps and mathematical equations have been developed to alleviate mass loading measurement discrepancies [5][6]. Unfortunately, these techniques take time to implement and are prone to noise induced errors.…”

Application of Sherman–Morrison–Woodbury formulas in instantaneous dynamic of peripheral milling for thin-walled component

“…Because of the transfer mass effect, a systematic error is introduced in the measured FRFs, and the natural modes (e.g., natural frequencies) of the structure shift from their correct values. Many researches about how to cancel and remove the transducer mass from the measured FRFs have been reported [23,24], and various methods were proposed to realize the motivation. For example, two accelerometers with different masses were used to conduct the testing experiment in order to remove the influence of transducer mass on the FRFs [25].…”

Estimation of the auto frequency response function at unexcited points using dummy masses

“…In this method, the inertial force of the dummy mass is regarded as an external force acting on the target structure's excitation point. This assumption has been used to compensate for the sensor mass effect in the vibration tests [2][3][4][5][6][7][8][9][10][11][12]. Because the sensors have a mass effect, which influences the dynamic characteristics of the target structure, many correction methods have been proposed.…”