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首页> 外文会议>Proceedings of ESMATS 2011: 14th European space mechanisms and tribology symposium.;Proceedings of ESMATS 2011: 14th European space mechanisms and tribology symposium. >INVESTIGATION OF AN ANOMALOUS FAILURE OF BEARING ON A FAN WITHIN THE COLUMBUS MODULE OF THE ISS
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INVESTIGATION OF AN ANOMALOUS FAILURE OF BEARING ON A FAN WITHIN THE COLUMBUS MODULE OF THE ISS

机译：ISS哥伦布模块内的风扇轴承异常损坏的调查

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摘要

A premature failure of an Inter module Return FanrnAssembly (IRFA) within the Columbus module of thernInternational Space Station (ISS) has been investigatedrnto identify the root cause and the counteractions to berntaken. The dismounted parts and the collected debrisrnhave been analysed using optical microscopy, ScanningrnElecron Microscopy (SEM), Energy Dispersivernspectroscopy (EDS) and dedicated dimensionalrnmeasurements have been performed.rnThe inspection indicated an anomalous wear of onernonly of the two support bearings and in particular arnstrong interaction between the cage and the lands of thernouter ring with consequent friction and wear, while thernother parts of both the bearings were in reasonablernconditions.rnThe analyses indicated a misalignment of one bearingrnthis being the origin of the non-nominal loadrnconditions that led to the premature wear of thernbearing. The inspections conducted allowed thernidentification of the corrective actions to bernimplemented in order to minimize the likelihood ofrnoccurrence of the failure.
机译：已经对国际空间站（ISS）哥伦布模块内的模块间返回风机组件（IRFA）的过早故障进行了研究，以确定根本原因和采取的对策。已使用光学显微镜，扫描电子显微镜（SEM），能量色散光谱仪（EDS）和专用尺寸测量仪对拆卸的零件和收集的碎片进行了分析。保持架和热沉环的台面随之产生摩擦和磨损，而两个轴承的其他部分处于合理的状态。分析表明一个轴承未对准，这是导致轴承过早磨损的非标称载荷的原因。 。进行的检查允许对纠正措施进行识别，以最大程度地减少发生故障的可能性。

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