Some Measurements of the Longitudinal Elastic Frequencies of Cylinders Using a Magnetostriction Oscillator

Abstract

Cylindrical rods cut from two samples of stainless steel are excited to longitudinal vibration in a magnetostriction oscillator and the resonant frequencies at which the rods control the oscillator are measured by beating with a crystal oscillator of known frequency. Many rods of each material are measured in order to test the theoretical relation given by Lord Rayleigh between the natural longitudinal frequency and the dimensions, in particular the effect of the diameter of the rod on its frequency.