In this chapter, an intrinsic damping coefficient is being calibrated by mapping the experimental data with the simulation results, and it is further utilized for dynamic analysis of composite shafts. The experimental impact hammer response of shafts with different compositions of 6061 Al/ Al2O3 is being extracted through a digital vibration analyzer OROS36®. Computational results are obtained by a multiscale modeling approach where effective material properties are predicted through the mean-field homogenization. These properties are utilized as parameters for computing the vibration response of these shafts through a multi-energy domain bond graph approach. Microscopic parameters such as the size of particles, average aspect ratio and compositions are determined by image processing of SEM images of different composite shafts. The experimental investigation clearly depicts the effect of increasing reinforcement in the composite. The amplitudes of vibration are reduced, and the natural frequency of the shafts is increased as the volume percentage of the reinforcement increases. The calibrated parameters provided congruent results with the experimental data.