Application of spectral analysis in research of vibration

Abstract

This paper describes method of data analysis in diagnostics of threaded joint. There are described problem, occur in case research of decrement vibrations, excited by short impact (shock). Thus, because aim of such investigation is define one of natural frequencies, there is needed to perform Fourier transformation with purpose find such one. Fourier transformation of decrement vibration gives amplitude-frequency characteristics, having dummy frequencies. To eliminate dummy frequencies in this paper is proposed method. [...].