Abstract
Transfer Path Analysis (TPA) has been conducted in order to improve the noise and vibration quality of mechanical structures. However, the force identification in the TPA is still challenging problem and its accuracy has to be improved. The Matrix Inversion Method is an approach to force identification. The Matrix Inversion Method estimates the excitation force by the product of an inverse matrix of accelerance and a vector of actual operational acceleration. It is known that the Matrix Inversion Method is very sensitive to measurement noise especially at the resonance. This paper proposes a new force identification method by using strain measurement. The method estimated the force using the strain Frequency Response Function (SFRF) instead of acceleration. A vibration experiment is conducted to compare the results by the proposed method with the conventional method.
