Development of Shock Excitation Technique Based on Fast Fourier Transform

Abstract

<p>Based on the theory of Fast Fourier Transform the shock excitation technique is applied for determining the dynamic characteristic of machine tools. The theory of the technique and its practical application procedure are explained. The use of Hewlett-Packard Fourier Analyser for shock excitation signal analysis is described. The procedure for receptance measurement as well as for mode shape measurements are explained. In discussion the results obtained by shock excitation technique are compared with the results by harmonic excitation technique. The convenience of the shock excitation technique in some particular applications is also discussed.</p>