Weibull-Based Design Methodology for Rotating Structures in Aircraft Engines
The NASA Energy-Efficient Engine (E3-Engine) is used as the basis of a Weibull-based life and reliability analysis. Each component's life, and thus the engine's life, is defined by high-cycle fatigue or low-cycle fatigue. Knowing the cumulative life distribution of each of the components m...
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| Format: | Article |
| Language: | English |
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Wiley
2003-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/S1023621X03000290 |
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| author | Erwin V. Zaretsky Robert C. Hendricks Sherry Soditus |
| author_facet | Erwin V. Zaretsky Robert C. Hendricks Sherry Soditus |
| author_sort | Erwin V. Zaretsky |
| collection | DOAJ |
| description | The NASA Energy-Efficient Engine (E3-Engine) is used as the basis of a Weibull-based life and reliability analysis. Each component's life, and thus the engine's life, is defined by high-cycle fatigue or low-cycle fatigue. Knowing the cumulative life distribution of each of the components making up the engine as represented by a Weibull slope is a prerequisite to predicting the life and reliability of the entire engine. As the engine's Weibull slope increases, the predicted life decreases. The predicted engine lives L5 (95% probability of survival) of approximately 17,000 and 32,000 hr do correlate with current engine-maintenance practices without and with refurbishment, respectively. The individual high-pressure turbine (HPT) blade lives necessary to obtain a blade system life L0.1 (99.9% probability of survival) of 9000 hr for Weibull slopes of 3, 6, and 9 are 47,391; 20,652; and 15,658 hr, respectively. For a design life of the HPT disks having probable points of failure equal to or greater than 36,000 hr at a probability of survival of 99.9%, the predicted disk system life L0.1 can vary from 9408 to 24,911 hr. |
| format | Article |
| id | doaj-art-38959a14cb594834a64a38fa585e0d82 |
| institution | Kabale University |
| issn | 1023-621X |
| language | English |
| publishDate | 2003-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-38959a14cb594834a64a38fa585e0d822025-02-03T01:32:06ZengWileyInternational Journal of Rotating Machinery1023-621X2003-01-019531332510.1155/S1023621X03000290Weibull-Based Design Methodology for Rotating Structures in Aircraft EnginesErwin V. Zaretsky0Robert C. Hendricks1Sherry Soditus2National Aeronautics and Space Administration, Glenn Research Center, Cleveland, Ohio, USANational Aeronautics and Space Administration, Glenn Research Center, Cleveland, Ohio, USAUnited Airlines Maintenance, San Francisco, California, USAThe NASA Energy-Efficient Engine (E3-Engine) is used as the basis of a Weibull-based life and reliability analysis. Each component's life, and thus the engine's life, is defined by high-cycle fatigue or low-cycle fatigue. Knowing the cumulative life distribution of each of the components making up the engine as represented by a Weibull slope is a prerequisite to predicting the life and reliability of the entire engine. As the engine's Weibull slope increases, the predicted life decreases. The predicted engine lives L5 (95% probability of survival) of approximately 17,000 and 32,000 hr do correlate with current engine-maintenance practices without and with refurbishment, respectively. The individual high-pressure turbine (HPT) blade lives necessary to obtain a blade system life L0.1 (99.9% probability of survival) of 9000 hr for Weibull slopes of 3, 6, and 9 are 47,391; 20,652; and 15,658 hr, respectively. For a design life of the HPT disks having probable points of failure equal to or greater than 36,000 hr at a probability of survival of 99.9%, the predicted disk system life L0.1 can vary from 9408 to 24,911 hr.http://dx.doi.org/10.1155/S1023621X03000290 |
| spellingShingle | Erwin V. Zaretsky Robert C. Hendricks Sherry Soditus Weibull-Based Design Methodology for Rotating Structures in Aircraft Engines International Journal of Rotating Machinery |
| title | Weibull-Based Design Methodology for Rotating Structures in Aircraft Engines |
| title_full | Weibull-Based Design Methodology for Rotating Structures in Aircraft Engines |
| title_fullStr | Weibull-Based Design Methodology for Rotating Structures in Aircraft Engines |
| title_full_unstemmed | Weibull-Based Design Methodology for Rotating Structures in Aircraft Engines |
| title_short | Weibull-Based Design Methodology for Rotating Structures in Aircraft Engines |
| title_sort | weibull based design methodology for rotating structures in aircraft engines |
| url | http://dx.doi.org/10.1155/S1023621X03000290 |
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