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本文探讨了铸铁这类具有较高内耗材料之弹性模量的动态法测量,提出新的判别共振模式的方法,并认为测切变模量时,测扭共振二阶谐频比测扭共振基频有利。
In this paper, the dynamic measurement of the elastic modulus of cast iron with high internal friction material is discussed, and a new method to determine the resonant mode is proposed. It is considered that the second harmonic ratio Frequency is favorable.