Wave Propagation Analysis for Determining the Dynamic Properties of High Damping Alloys

抄録

The viscoelastic behaviors of two kinds of high damping alloys, Mn-Cu alloy and Fe-Cr-Al alloy, are studied with a view to assessing the damping characteristics. Under the assumption that the material is a linear viscoelastic body, the complex compliance is obtained from the wave propagation data on a long rod analyzed with Fourier transform technique. Copper is also examined for comparison. Experimental results reveal the frequency and amplitude dependences of damping capacity in each material. It is also found that the 4-element model should be applied for both high damping alloys, and the Maxwell model for copper, respctively.