Applying FMEA in T700 engine for failure analysis of electrical system

• Main Authors: Zhang Ya Ting, 張雅婷
• Other Authors: LEE, YU-CHENG
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/52319525281552490945

碩士 === 中華大學 === 科技管理學系 === 105 === In the history of flight safety, there are too many cases of casualties, resulting in casualties and aircraft damage results, therefore, only in the real understanding of the causes of aircraft crash, can try to be improved and prevented. According to the statistics of the major system failures in the past ten years, the engine failure rate of the power system is very high, and its power failure or failure is often the cause of the aircraft crash. Therefore, this study hopes to analyze the cause of the fault of the power system. Failure Mode and Effect Analysis (FMEA) is used to analyze the failure of the product system. The purpose of this paper is to find out the potential failure mode of the system and propose preventive measures to prevent the failure mode regeneration. Therefore, this study explores the failure of the helicopter engine in the archives of the Army Air Force Maintenance Unit, and attempts to introduce the failure mode and effect-analysis into it, confirming its feasibility and further preventing the failure of the engine Risk countermeasures and suggestions. In this study, the engine electrical system according to the analysis of the level of drawing the reliability of the block diagram, for the point of the system engine electronic control unit, through the recorder, alternator, thermocouple assembly, power turbine speed sensor and torque speed sensor gradually find out the failure The risk and priority of the seven groups of events, the severity and the detection level, and the risk priority index RPN evaluation may cause the engine failure and function potential failure factor, the risk-priority number ), The results of the engine electronic control unit found that the risk priority index for the highest, for the engine electrical system failure the main core of the main fire. Based on the results obtained by FMEA analysis of the engine electrical system, this paper puts forward that the research on the quality management of the management of the management should be carried out by using the research method. The failure mode will be used to find out the causes and risks of the failure Index, will be available to improve the system to repair the permit.