Research On Measure For Elastic Parameter Of Damping Material

Damping material is used abroad in yawp and underwater acoustics field in recent years. Before using material it is very important to known the frequency range about excellent absorbency and some basic performance in this frequency. At present there are many measure methods about damping material's elastic parameters, but the measure in low frequency still have not recognized standard. The main content of this thesis is research theory and experiment on measure methods about damping material elastic parameters.This thesis base on the theory of vertical vibration, exploring a new measure methods about damping material's elastic parameters-amplitude imitation method, establish experiment system, measure some damping material by amplitude fitting method and resonance method. Confirm feasibility of amplitude fitting method by analyzing and contrasting.Finally, analyzed error and amend result on the basis of experiment. The result of experiment show amplitude imitation method is effective measure method about damping material in low frequency.