Statistic analysis of fatigue test by HHT method

By using the method of HHT signal decomposition to deal with the statistics of the length of standard segment, the information about frequency and amplitude of the statistics will be obtained. Through the contrast of frequency and amplitude of the standard segment length at different stages, the positive degree of the structure can be judged. With practical experience to further set up the positive scope of frequency and amplitude, more guidance can be applied to real projects.