ANALISIS MODE KEGAGALAN DAN TINGKAT
KEANDALAN ENGINE JT8D-SERIES MENGGUNAKAN
METODE FMEA (FAILURE MODE AND EFFECT
ANALYSIS) DAN METODE WEIBULL
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Institusion
INSTITUT TEKNOLOGI DIRGANTARA ADISUTJIPTO
Author
SAIFULLOH, FULANI
Subject
T Technology (General)
Datestamp
2024-07-23 06:44:47
Abstract :
This research aims to determine the causes of being unscheduled removal that occurs most frequently on JT8D-Series Engines, identify failure modes based on the most frequent causes of unscheduled removal occurs on the JT8D-Series Engine using the FMEA (Failure Mode and Effect Analysis), as well as analyzing the level of reliability and rate failure (failure rate) using the Weibull Analysis method. This research carried out based on Unscheduled Removal Engine JT8D-Series data during operational engine within a period of 5 years. Based on data grouping, the causes of Unscheduled occur Removal of JT8D-Series Engine then found the cause of unscheduled removal The most common thing that occurs on JT8D-Series engines is turbine case failure. In the failure mode analysis process using the FMEA method, we obtained The highest RPN (Risk Priority Number) value is 486 with potential failure the mode is a crack in the turbine blades. So it needs to be done preventively The maintenance program in this case is an on-condition for monitoring crack on the turbine blade of the JT8D-Series Engine at certain time intervals accurate. Based on analysis of the level of reliability and failure rate (failure rate) using the Weibull Analysis method contained in The Minitab 18 software obtained a beta value (? (i.e. 1.59755 (Flight Cycles) and 1.27311 (Flight Hours) which indicates wear out failure. Then we also obtained a Mean Time To Failure (MTTF) value of 1472.97 Flight Cycles or 1643.31 Flight Hours for turbine failure cases. Mark JT8D-Series Engine reliability during MTTF (Mean Time To Failure) is 43.18% (for analysis on Flight Cycles and 40.52% (for analysis on Flight Hours). There needs to be additional preventive measures for Prevent turbine failure by inspecting the engine turbine section area JT8D-Series with the time interval recommended in the analysis JT8D-Series Engine reliability level.
This research aims to determine the causes of being unscheduled removal that occurs most frequently on JT8D-Series Engines, identify failure modes based on the most frequent causes of unscheduled removal occurs on the JT8D-Series Engine using the FMEA (Failure Mode and Effect Analysis), as well as analyzing the level of reliability and rate failure (failure rate) using the Weibull Analysis method. This research carried out based on Unscheduled Removal Engine JT8D-Series data during operational engine within a period of 5 years. Based on data grouping, the causes of Unscheduled occur Removal of JT8D-Series Engine then found the cause of unscheduled removal The most common thing that occurs on JT8D-Series engines is turbine case failure. In the failure mode analysis process using the FMEA method, we obtained The highest RPN (Risk Priority Number) value is 486 with potential failure the mode is a crack in the turbine blades. So it needs to be done preventively The maintenance program in this case is an on-condition for monitoring crack on the turbine blade of the JT8D-Series Engine at certain time intervals accurate. Based on analysis of the level of reliability and failure rate (failure rate) using the Weibull Analysis method contained in The Minitab 18 software obtained a beta value (? (i.e. 1.59755 (Flight Cycles) and 1.27311 (Flight Hours) which indicates wear out failure. Then we also obtained a Mean Time To Failure (MTTF) value of 1472.97 Flight Cycles or 1643.31 Flight Hours for turbine failure cases. Mark JT8D-Series Engine reliability during MTTF (Mean Time To Failure) is 43.18% (for analysis on Flight Cycles and 40.52% (for analysis on Flight Hours). There needs to be additional preventive measures for Prevent turbine failure by inspecting the engine turbine section area JT8D-Series with the time interval recommended in the analysis JT8D-Series Engine reliability level.
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