| 摘要 |
PURPOSE:To enable a very weak acoustic emission (AE) signal to be detected in good accuracy, by adhesively mounting AE sensors to recessed parts, provided in members not rotating of a bearing device, and detecting the AE signal. CONSTITUTION:A device, pouring in heat resisting and insulating resin 5 like epoxy resin to gap parts between recessed parts 2 and acoustic emission (AE) sensors 4, secures the AE sensors 4 to outer rings 1. Lead wires 6, connected with an AE measuring unit 10, are drawn out from the AE sensors 4 through the resin 5. Accordingly, if a microcrack is generated inside bearings A, B while a shaft is in rotation, a generated AE signal of very weak intensity can be detected in good accuracy by the AE sensors 4 integrally provided in the recessed parts 2 in the outer rings 1. |
