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- W1992040959 abstract "An operational acoustic signature inspection system for railroad wheels is described. The purpose is to inspect the wheels on a train as it goes past an inspection site and analyze the data in real time. The wheels on the train are sensed by magnetic wheel sensors that alert an electromechanical hammer installed on the inside of each rail. The hammers strike the wheels on each axle, and the sound is picked up by a microphone installed in front of each hammer and transmitted to a minicomputer at the remote location via dedicated telephone lines. Studies were performed on data obtained from a test consist, specially assembled for this work, and from revenue service trains. Various features were computed in both time and frequency domains, including the spectral cross correlation, the percentage of common peaks, and a measure based on resonance frequencies, and were analyzed using a pattern recognition package. It was concluded that the use of the package resulted in significant improvement in detection of defective wheels and reduction of false alarms." @default.
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- W1992040959 date "1989-01-01" @default.
- W1992040959 modified "2023-10-17" @default.
- W1992040959 title "Application of an automated package of pattern recognition techniques to acoustic signature inspection of railroad wheels" @default.
- W1992040959 doi "https://doi.org/10.1121/1.397695" @default.
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