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首页> 外文期刊>Engineering failure analysis >Failure analysis of a gear wheel of a marine azimuth thruster
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Failure analysis of a gear wheel of a marine azimuth thruster

机译：船用方位推进器齿轮故障分析

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摘要

A failure analysis of two helical gear wheels of a ducted azimuth thruster is presented. The research work consisted of a fracture examination of the material in order to determine the damage root causes. The samples for the failure analysis were obtained from two broken teeth of two helical gear wheels. An analysis through the scanning electron microscope (SEM) was carried out close to the crack initiation. It was found that the damage in the bevel gears were by the fatigue fracture mode. The SEM analysis showed that the gear teeth were under severe contact stress during the operation aggravated by an inappropriate lubricating. A possible misalignment between the pinions and the gear wheels teeth could also contribute for the premature failure.
机译：提出了导管方位推进器两个斜齿轮的失效分析。研究工作包括对材料进行断裂检查，以确定损坏的根本原因。用于故障分析的样品是从两个斜齿轮的两个断齿获得的。通过扫描电子显微镜（SEM）的分析接近裂纹萌生。发现锥齿轮的损坏是由疲劳断裂模式引起的。 SEM分析表明，在操作过程中，由于润滑不当，使齿轮齿承受了严重的接触应力。小齿轮和齿轮齿之间可能的未对准也会导致过早损坏。

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