中文摘要：

传统的内耗测量规范多采用扭摆法和振簧法,并没有涉及内耗随应变振幅变化的情况。为更加准确测量材料在不同应变振幅下的内耗和模量值,该文根据不同内耗测量方法中试样的应力分布情况,从内耗基本定义出发,考虑内耗随应变振幅变化的情况,重新推演扭摆法和振簧法测量内耗和模量的基本方程,获得采用扭摆法和振簧法测量内耗（模量）-振幅曲线的修正公式,为准确测量大应变振幅激发情形下高阻尼材料的内耗和模量提供参考。

英文摘要：

To the traditional standard of internal friction measurement, the torsion pendulum and vibration reed were preferentially recommended and the issue of strain amplitude dependence of internal friction was not taken into consideration. To more precisely measure materials＇ internal friction and modulus at various strain amplitude, this paper considers the strain amplitude dependence of internal friction and modulus by analyzing the stress distribution in the sample in different internal friction measurement methods. The modification formulas for the measurement of internal friction and modulus versus strain-amplitude are obtained by re-deriving the principle equations for internal friction and modulus measurements by torsion pendulum and vibration reed methods from the basic definition of internal friction. This provides a new standard for precise measurement of internal friction at different strain-amplitude in the cases of high strain-amplitude excitation or high damping materials.