Synchronous Analysis for Diagnostics of Rolling Bearings in the Turbojet Engine
<p>Designed in the Aviation Institute, the K-15 turbojet engine has got rolling bearings, which answers with frequency <math alttext="$5.87imes omega_r$"><mn>5.87</mn> <mo>×</mo> <msub><mi>ω</mi> <mi>r</mi&g...
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| Format: | Article |
| Language: | English |
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Wiley
2005-01-01
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| Series: | International Journal of Rotating Machinery |
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| Online Access: | http://www.hindawi.net/access/get.aspx?journal=ijrm&volume=2005&pii=S1023621X03504043 |
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| author | Gosiewski Zdzisław Romaniuk Andrzej |
| author_facet | Gosiewski Zdzisław Romaniuk Andrzej |
| author_sort | Gosiewski Zdzisław |
| collection | DOAJ |
| description | <p>Designed in the Aviation Institute, the K-15 turbojet engine has got rolling bearings, which answers with frequency <math alttext="$5.87imes omega_r$"><mn>5.87</mn> <mo>×</mo> <msub><mi>ω</mi> <mi>r</mi> </msub> </math> the unbalance excitation. The signal with such frequency indicates a fault of the outer race of the rolling bearing. A set of the digital synchronous filters was used for the K-15 vibration spectrum analysis. A procedure of filtration was performed by the computer software. The sychronous summation of the measured signals was carried out before the spectrum analysis. Two cases were considered: the engine with a small force due to unbalance (a small angular velocity of the rotor), and the engine with a big unbalance force (high angular velocity). In the first case, the outer race frequency was not observed, despite the existence of the vibration amplitude (caused by unknown disturbances) with such frequency before the synchronous summation. In the second case, the outer race frequency after synchronous summation has enlarged amplitude while other spectrum components in its vicinity have been damped. It underlines the usefulness of the synchronous analysis in the vibration diagnostics of the rotating machinery.</p> |
| format | Article |
| id | doaj-art-b3a274cb656446fca80b0344c2183260 |
| institution | DOAJ |
| issn | 1023-621X |
| language | English |
| publishDate | 2005-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-b3a274cb656446fca80b0344c21832602025-08-20T03:20:54ZengWileyInternational Journal of Rotating Machinery1023-621X2005-01-0120052128134Synchronous Analysis for Diagnostics of Rolling Bearings in the Turbojet EngineGosiewski ZdzisławRomaniuk Andrzej<p>Designed in the Aviation Institute, the K-15 turbojet engine has got rolling bearings, which answers with frequency <math alttext="$5.87imes omega_r$"><mn>5.87</mn> <mo>×</mo> <msub><mi>ω</mi> <mi>r</mi> </msub> </math> the unbalance excitation. The signal with such frequency indicates a fault of the outer race of the rolling bearing. A set of the digital synchronous filters was used for the K-15 vibration spectrum analysis. A procedure of filtration was performed by the computer software. The sychronous summation of the measured signals was carried out before the spectrum analysis. Two cases were considered: the engine with a small force due to unbalance (a small angular velocity of the rotor), and the engine with a big unbalance force (high angular velocity). In the first case, the outer race frequency was not observed, despite the existence of the vibration amplitude (caused by unknown disturbances) with such frequency before the synchronous summation. In the second case, the outer race frequency after synchronous summation has enlarged amplitude while other spectrum components in its vicinity have been damped. It underlines the usefulness of the synchronous analysis in the vibration diagnostics of the rotating machinery.</p>http://www.hindawi.net/access/get.aspx?journal=ijrm&volume=2005&pii=S1023621X03504043diagnosticsnonstationery vibrationssynchronous summationsynchronous filtrationturbojet enginerolling bearings |
| spellingShingle | Gosiewski Zdzisław Romaniuk Andrzej Synchronous Analysis for Diagnostics of Rolling Bearings in the Turbojet Engine International Journal of Rotating Machinery diagnostics nonstationery vibrations synchronous summation synchronous filtration turbojet engine rolling bearings |
| title | Synchronous Analysis for Diagnostics of Rolling Bearings in the Turbojet Engine |
| title_full | Synchronous Analysis for Diagnostics of Rolling Bearings in the Turbojet Engine |
| title_fullStr | Synchronous Analysis for Diagnostics of Rolling Bearings in the Turbojet Engine |
| title_full_unstemmed | Synchronous Analysis for Diagnostics of Rolling Bearings in the Turbojet Engine |
| title_short | Synchronous Analysis for Diagnostics of Rolling Bearings in the Turbojet Engine |
| title_sort | synchronous analysis for diagnostics of rolling bearings in the turbojet engine |
| topic | diagnostics nonstationery vibrations synchronous summation synchronous filtration turbojet engine rolling bearings |
| url | http://www.hindawi.net/access/get.aspx?journal=ijrm&volume=2005&pii=S1023621X03504043 |
| work_keys_str_mv | AT gosiewskizdzis322aw synchronousanalysisfordiagnosticsofrollingbearingsintheturbojetengine AT romaniukandrzej synchronousanalysisfordiagnosticsofrollingbearingsintheturbojetengine |