| 摘要 |
PROBLEM TO BE SOLVED: To provide a failure diagnosis device for receiving an elastic wave generated in company with crack generation or development of a material, directly without attenuation, and to provide a failure diagnosis method using the failure diagnosis device. SOLUTION: The failure diagnosis device includes an elastic wave detection means, and an failure diagnosis means for diagnosis of a failure based on a signal from the elastic wave detection means. The elastic wave detection means includes a liquid reservoir for collecting liquid in contact with part of a rotary shaft, and an acoustic emission (AE) sensor installed in contact with the liquid reservoir. The failure diagnosis means diagnoses a failure of the rotary shaft by using the failure diagnosis device having a function for diagnosis of a failure generated in the rotary shaft by analyzing the detected elastic wave. COPYRIGHT: (C)2011,JPO&INPIT
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