Non-contact gas turbine blade vibration measurment from casing pressure and vibration signals - A review
This paper presents a summary of a recent research program, focusing on a new method of non contact gas turbine blade vibration measurement using casing pressure and vibration signals. Currently the dominant method of non contact measurement of turbine blade vibrations employs the use of a number of...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Conference Paper |
| Published: |
TBA
2010
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/42684 |
| _version_ | 1848756488491761664 |
|---|---|
| author | Forbes, Gareth Randall, R. |
| author2 | TBA |
| author_facet | TBA Forbes, Gareth Randall, R. |
| author_sort | Forbes, Gareth |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper presents a summary of a recent research program, focusing on a new method of non contact gas turbine blade vibration measurement using casing pressure and vibration signals. Currently the dominant method of non contact measurement of turbine blade vibrations employs the use of a number of proximity probes located around the engine periphery measuring the blade tip (arrival) time (BTT). Despite the increasing ability of this method there still exist some limitations, viz: the requirement of a large number of sensors for each engine stage, difficulties in dealing with multiple excitation frequencies, sensors being located in the gas path, and the inability to directly measure the natural frequency of a given blade. Simulations established with a physics based model along with experimental measurements are presented in this paper, using internal pressure and casing vibration measurements, which have the potential to rectify some of these problems. |
| first_indexed | 2025-11-14T09:13:00Z |
| format | Conference Paper |
| id | curtin-20.500.11937-42684 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:13:00Z |
| publishDate | 2010 |
| publisher | TBA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-426842017-01-30T15:01:26Z Non-contact gas turbine blade vibration measurment from casing pressure and vibration signals - A review Forbes, Gareth Randall, R. TBA gas turbines casing vibration blade vibration This paper presents a summary of a recent research program, focusing on a new method of non contact gas turbine blade vibration measurement using casing pressure and vibration signals. Currently the dominant method of non contact measurement of turbine blade vibrations employs the use of a number of proximity probes located around the engine periphery measuring the blade tip (arrival) time (BTT). Despite the increasing ability of this method there still exist some limitations, viz: the requirement of a large number of sensors for each engine stage, difficulties in dealing with multiple excitation frequencies, sensors being located in the gas path, and the inability to directly measure the natural frequency of a given blade. Simulations established with a physics based model along with experimental measurements are presented in this paper, using internal pressure and casing vibration measurements, which have the potential to rectify some of these problems. 2010 Conference Paper http://hdl.handle.net/20.500.11937/42684 TBA restricted |
| spellingShingle | gas turbines casing vibration blade vibration Forbes, Gareth Randall, R. Non-contact gas turbine blade vibration measurment from casing pressure and vibration signals - A review |
| title | Non-contact gas turbine blade vibration measurment from casing pressure and vibration signals - A review |
| title_full | Non-contact gas turbine blade vibration measurment from casing pressure and vibration signals - A review |
| title_fullStr | Non-contact gas turbine blade vibration measurment from casing pressure and vibration signals - A review |
| title_full_unstemmed | Non-contact gas turbine blade vibration measurment from casing pressure and vibration signals - A review |
| title_short | Non-contact gas turbine blade vibration measurment from casing pressure and vibration signals - A review |
| title_sort | non-contact gas turbine blade vibration measurment from casing pressure and vibration signals - a review |
| topic | gas turbines casing vibration blade vibration |
| url | http://hdl.handle.net/20.500.11937/42684 |