ROTATING BEARING ANALYSIS AND MONITORING SYSTEM
First Claim
1. A method of analyzing vibrations of a bearing installed in a rotating machine comprising the steps of:
- accessing vibration data corresponding to the bearing to be analyzed;
determining a degraded condition factor BD for the bearing from the vibration data;
selecting an expected designer-determined mean-time-to-failure MTTF of the bearing operating under a design load in the operating environment of the rotating machine;
selecting a forecast time period;
calculating a reduced mean-time-to-failure RMTTF of the bearing using the expected designer-determined mean-time-to-failure MTTF and the degraded condition factor BD;
calculating a probability of failure of the bearing in the forecast time period using the reduced mean time to failure RMTTF;
accessing cost data corresponding to a cost of failure of the bearing in the rotating machine;
calculating a financial risk from the calculated probability of failure in the forecast time period and the cost data; and
displaying the financial risk for the selected time period.
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Accused Products
Abstract
A method of analyzing vibrations of a rolling element bearing installed in a rotating machine includes accessing vibration data corresponding to the bearing to be analyzed, determining a degraded condition factor BD for the bearing, selecting an expected designer-determined mean-time-to-failure MTTF of the bearing operating under a design load in the operating environment of the rotating machine, selecting a forecast time period, calculating a reduced mean-time-to-failure RMTTF of the bearing using the expected designer-determined mean-time-to-failure MTTF and the degraded condition factor BD, calculating a probability of failure of the bearing in the forecast time period using the reduced mean time to failure RMTTF, accessing cost data corresponding to a cost of failure of the bearing in the rotating machine, calculating a financial risk from the calculated probability of failure in the forecast time period and the cost data, and displaying the financial risk for the selected time period.
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Citations
26 Claims
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1. A method of analyzing vibrations of a bearing installed in a rotating machine comprising the steps of:
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accessing vibration data corresponding to the bearing to be analyzed; determining a degraded condition factor BD for the bearing from the vibration data; selecting an expected designer-determined mean-time-to-failure MTTF of the bearing operating under a design load in the operating environment of the rotating machine; selecting a forecast time period; calculating a reduced mean-time-to-failure RMTTF of the bearing using the expected designer-determined mean-time-to-failure MTTF and the degraded condition factor BD; calculating a probability of failure of the bearing in the forecast time period using the reduced mean time to failure RMTTF; accessing cost data corresponding to a cost of failure of the bearing in the rotating machine; calculating a financial risk from the calculated probability of failure in the forecast time period and the cost data; and displaying the financial risk for the selected time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A computer program product for analyzing vibrations of a bearing installed in a rotating machine comprising:
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a computer usable medium having computer readable program code means embodied in said medium for accessing vibration data corresponding to the bearing to be analyzed; computer readable program code means for determining a degraded condition factor BD for the bearing from the vibration data; computer readable program code means for selecting an expected designer-determined mean-time-to-failure MTTF of the bearing operating under a design load in the operating environment of the rotating machine; computer readable program code means for selecting a forecast time period; computer readable program code means for calculating a reduced mean-time-to-failure RMTTF of the bearing using the expected designer-determined mean-time-to-failure MTTF and the degraded condition factor BD; computer readable program code means for calculating a probability of failure of the bearing in the forecast time period using the reduced mean time to failure RMTTF; computer readable program code means for accessing cost data corresponding to a cost of failure of the bearing in the rotating machine; computer readable program code means for calculating a financial risk from the calculated probability of failure in the forecast time period and the cost data; and computer readable program code means for displaying the financial risk for the selected time period.
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Specification