Design of a Composite Damping Sheet Made by Superplastic Rolling/Joining Technique of Steel-Superplastic Alloy

Abstract

In a previous paper, the composite sheets made by superplastic rolling/joining technique of steel-super-plastic alloy were developed and it was found that they could be used for the damping material at high temperature. On the basis of these results, a study has been conducted to investigate the damping mechanism of the composite sheet and the design of the composite damping sheet of steel-superplastic alloy. The effect of the joining interface of the composite sheet on damping capacity could not be recognized. It became possible that the damping capacity of the composite sheet was calculated from each damping capacity characteristic. The damping capacity calculated from a simple model was generally in agreement with the measured one. From the calculated results, when the layer number of the composite sheets was five, the best damping capacity was obtained.