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STUDY OF FATIGUE DAMAGE ON SEISMIC DYNAMIC SIGNALS

HUANG You-ting;WU Wei-qing;LI Jun;Fujian University of Technology,School of Materials Science and Engineering;Testing Center of Fuzhou University;Earthquake Administration of Fujian Province;  
Exploring various signal characterization of earthquake, is the key for earthquake prediction of the natural disasters. In this paper, based on theory of material fatigue damage, the changes for fatigue damage energy of force bearing strata was calculated before the earthquakes by seismic dynamic signals. The changes of bearing rock fatigue damage energy display: fatigue damage energy bearing strata changing with the time all the time; But it has shown in a day(24 hours) for the periodic change rule; And the fatigue damage before the earthquake the energy corresponding appeared significantly increased.
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