“敲击法”测量弹性模量的研究

Research on Measuring Elastic Module with"Hammering Method"

超声振动系统设计及分析时要用到声速,声速计算时要用到弹性固体材料的弹性模量、密度。固体密度易测量,弹性模量较难测量。实验证明:"敲击法"测量弹性模量的原理、方法是简便有效的。

Sound velocity must be used when an ultrasonic vibration system is designed and analyzed, the material constants-elastic module and density are needed as calculating sound velocity. It is easy to test： density but difficult to test elastic module. A test method called ＂hammering method＂ and its test principle are given and have proved the method is efficient, which are used to measure elastic module.