作者: Noriaki Inoue , O Koyo Seiko Co. Ltd. Fujimoto , Shunji Harada , Yoshiki C , Shigeto C
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摘要: An apparatus for detecting a failure in bearing has an acoustic emission sensor which detects from the and outputs signals indicative of power emission, bandpass filter passes only range 100 kHz to 500 out received aforementioned sensor, comparator compares each extracted by with predetermined threshold value event expresses that signal exceeds value. This also computer receives comparator, determines time intervals occur, totals number respective timer intervals, whether or not totaled events determine bearing.