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Failure Analysis of a Jet Engine Gearbox Drive Gearshaft Ball Bearing

机译:喷气发动机变速箱驱动齿轮轴球轴承的失效分析

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摘要

The case study presented in this article details the failure investigation of an M50 alloy steel bearing used in a jet engine gearbox drive assembly. It discusses the investigative steps and analytic tools used to determine the root cause, highlighting the importance of continuous, thorough questioning by the investigating activity. The combined analyses demonstrated that the bearing failed by a single event overload as evidenced by bulk deformation and traces of foreign material on the rolling elements. The anomalous transferred metal found on the rolling elements subsequently led to the discovery of overlooked debris in an engine chip detector, and thus resulted in a review of several maintenance practices.
机译:本文介绍的案例研究详细介绍了用于喷气发动机变速箱驱动组件的M50合金钢轴承的故障研究。它讨论了用于确定根本原因的调查步骤和分析工具,强调了调查活动进行连续,彻底询问的重要性。组合分析表明,轴承会因单次事件过载而失效,这由整体变形和滚动元件上的异物痕迹证明。在滚动元件上发现异常转移的金属,随后导致在发动机碎片检测器中发现了被忽略的碎屑,因此对几种维护方法进行了审查。

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