Threshold Assessment of Gear Diagnostic Tools on Flight and Test Rig Data
- Author:
- Mosher, Marianne
- Published:
- August 2003.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Dempsey, Paula J. and Huff, Edward M.
- Access Online:
- hdl.handle.net
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- Summary:
- A method for defining thresholds for vibration-based algorithms that provides the minimum number of false alarms while maintaining sensitivity to gear damage was developed. This analysis focused on two vibration based gear damage detection algorithms, FM4 and MSA. This method was developed using vibration data collected during surface fatigue tests performed in a spur gearbox rig. The thresholds were defined based on damage progression during tests with damage. The thresholds false alarm rates were then evaluated on spur gear tests without damage. Next, the same thresholds were applied to flight data from an OH-58 helicopter transmission. Results showed that thresholds defined in test rigs can be used to define thresholds in flight to correctly classify the transmission operation as normal.
- Collection:
- NASA Technical Reports Server (NTRS) Collection.
- Note:
- Document ID: 20030062789., NASA/TM-2003-212220/Rev1., NAS 1.15:212220/Rev1., E-13812., and 59th Annual Forum and Technology Display; 6-8 May 2003; Phoenix, AZ; United States.
- Terms of Use and Reproduction:
- No Copyright.
- Access Online:
- hdl.handle.net
View MARC record | catkey: 15423284