Spectral compressor vibration analysis techniques
Studies at GAT have verified that the spectral distribution of energy in gaseous diffusion compressor vibrations contains information pertinent to the state of the compressor's ''health.'' Based on that conclusion, vibration analysis capabilities were included in the CUP computer data acquisition system. In order for that information to be used for diagnosis of incipient failure mechanisms, however, spectral features must be empirically associated with actual malfunctions and validated statistically as diagnostic symptoms. When the system was acquired, indicators were generally unknown except for those associated with unbalance, misalignment, 00 secondary surge and severe resonant blade vibrations. Others must be developed as in-service malfunctions occur. The power spectral density function (PSDF) has historically been used to compute vibration spectra. Accurate, high-resolution power density spectra require long data-acquisition periods which is inconsistent with frequent examinations of all up-rated compressors. Detection of gross spectral changes indicative of a need for detailed analyses has been accomplished at a rate of less than 1 minute per compressor. An optimum analytical sequence will be based on trade offs. Work is in progress to identify additional malfunction indicators and investigate tools other than the PSDF to provide faster diagnoses. 6 figs.
- Research Organization:
- Goodyear Atomic Corp., Piketon, OH (USA). Technical Div.
- DOE Contract Number:
- AC05-76OR00001
- OSTI ID:
- 6656238
- Report Number(s):
- GAT-T-3142; ON: DE89002800
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Monitoring of vibrating machinery using artificial neural networks
Machinery vibration: Origins, impressions and cures
Related Subjects
42 ENGINEERING
47 OTHER INSTRUMENTATION
GAS COMPRESSORS
SYSTEM FAILURE ANALYSIS
COMPRESSOR BLADES
DATA ACQUISITION
GASEOUS DIFFUSION PROCESS
MECHANICAL VIBRATIONS
NUMERICAL DATA
POWER DENSITY
SPECTRAL DENSITY
COMPRESSORS
DATA
FUNCTIONS
INFORMATION
ISOTOPE SEPARATION
SEPARATION PROCESSES
SPECTRAL FUNCTIONS
SYSTEMS ANALYSIS
050501* - Nuclear Fuels- Uranium Enrichment- Gaseous Diffusion- (-1989)
420200 - Engineering- Facilities
Equipment
& Techniques
440300 - Miscellaneous Instruments- (-1989)