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弹性模量是金属、合金对弹性变形的抗力指标。测量弹性模量有静态法和动态法两种。与静态法相比,动态法测量弹性模量较精确,特别是对高温和交变复杂负荷条件下工作的金属零件及部件。因教学、科研的需要,我们试制了一台利用音频悬挂动态法测量弹性模量的共振频率仪（见图1）。试样水平地悬挂在位于其两振动节点附近处的两根细丝上（不
Elastic modulus is a metal, alloy resistance to elastic deformation indicators. There are two kinds of static method and dynamic method to measure elastic modulus. Compared with the static method, the dynamic method to measure the elastic modulus is more precise, especially for high temperature and alternating complex working conditions of metal parts and components. Due to the needs of teaching and scientific research, we have trial-produced a resonant frequency meter that uses the dynamic method of audio suspension to measure the elastic modulus (see Figure 1). The sample is suspended horizontally on two filaments located near both of its vibrational nodes (no