一軸圧縮クリープ時に検出されたモルタルのAE波のスペクトル解析

概要

論文の詳細を見る
Some analytical results obtained in a course of an experimental study of the acoustic emission waves detected from the cement mortar under a uniaxial compressive load are presented in this paper. The spectral analyses of the A E waves were carried out using the data processor, digital memory and cylindrical specimens, and the power spectra were found by the conventional F. F. T. method. The peak values of the power spectra of the waves shift to the high frequency part as the strain increase, but the characteristics of the spectra in elastic and plastic regions are not clear sufficiently from the results. To find the differences of the characteristics of these spectra, a new parameter named accumulative generation ratio of power spectra is introduced into the analyses. Consequently, the differences of the power spectra characteristics in elastic, transitional and plastic regions are proved clearly by the new parameter.
神戸大学の論文
1983-01-30