IMPROVING THE TIME-FREQUENCY READING OF THE SIGNALS USED TO DETERMINE THE DYNAMIC STIFFNESS COEFFICIENT
The objective of the paper is to describe and determine the Fourier transform to define a passage relation of a signal from the time domain to a frequency domain. The process allows the identification of frequencies but does not provide complete information about the behavior of the system, in the sense that it does not allow the interpretation of frequency evolution over time. For this reason, I propose the use of time-frequency analysis.
Keywords: reading, signal, time-frequency, stiffness Cuvinte cheie: citire, semnal, timp-frecvență, rigiditate