Probabilistic analysis of turbine blade durability
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2004.
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | en_US |
| Published: |
Massachusetts Institute of Technology
2005
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/28893 |
| _version_ | 1826204921869893632 |
|---|---|
| author | Kountras, Apostolos, 1970- |
| author2 | Edward M. Greitzer. |
| author_facet | Edward M. Greitzer. Kountras, Apostolos, 1970- |
| author_sort | Kountras, Apostolos, 1970- |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2004. |
| first_indexed | 2024-09-23T13:03:28Z |
| format | Thesis |
| id | mit-1721.1/28893 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:03:28Z |
| publishDate | 2005 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/288932019-04-11T03:16:36Z Probabilistic analysis of turbine blade durability Kountras, Apostolos, 1970- Edward M. Greitzer. Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Aeronautics and Astronautics. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2004. Includes bibliographical references (leaves 71-72). The effect of variability on turbine blade durability was assessed for seven design/operating parameters in three blade designs. The parameters included gas path and cooling convective parameters, metal and coating thermal conductivity and coating thickness. The durability life was modelled as limited by thermo-mechanical low cycle fatigue and creep. A nominal blade design as well as two additional variants were examined using deterministic and probabilistic approaches. External thermal and pressure boundary conditions were generated by three-dimensional CFD calculations. The location of expected failure was the bottom of the trailing edge cooling slot and was the same for all three designs examined. The nominal design had higher life and less variability for the ranges of design parameters examined. For the temperature range studied fatigue was the primary damage mechanism. The variation in cooling air bulk temperature was most important in setting the variation in blade durability life. This life variation was also affected by main gas bulk temperature and heat transfer coefficient, and cooling heat transfer coefficient, but to a lesser extent. by Apostolos Kountras. S.M. 2005-09-27T18:55:00Z 2005-09-27T18:55:00Z 2004 2004 Thesis http://hdl.handle.net/1721.1/28893 60457797 en_US M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 72 leaves 3249202 bytes 3255004 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Aeronautics and Astronautics. Kountras, Apostolos, 1970- Probabilistic analysis of turbine blade durability |
| title | Probabilistic analysis of turbine blade durability |
| title_full | Probabilistic analysis of turbine blade durability |
| title_fullStr | Probabilistic analysis of turbine blade durability |
| title_full_unstemmed | Probabilistic analysis of turbine blade durability |
| title_short | Probabilistic analysis of turbine blade durability |
| title_sort | probabilistic analysis of turbine blade durability |
| topic | Aeronautics and Astronautics. |
| url | http://hdl.handle.net/1721.1/28893 |
| work_keys_str_mv | AT kountrasapostolos1970 probabilisticanalysisofturbinebladedurability |