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Full-Text Articles in Nuclear Engineering
Bayesian-Based Methods For Transitioning Between Prognostic Estimates To Leverage Available Data, Alan Y. Nam
Bayesian-Based Methods For Transitioning Between Prognostic Estimates To Leverage Available Data, Alan Y. Nam
Doctoral Dissertations
The availability of failure data directly impacts the empirical prognostic models that can be built. In turn, these models impact the accuracy and uncertainty of remaining useful life (RUL) estimates of systems and components. While ideally a large amount of data of previous failure modes can be collected, the difficulty in obtaining such data can present a significant hurdle. To alleviate the constraints of limited data, Bayesian-based methods of transitioning between different prognostic models were developed. This updating scheme leverages existing data in order to create a unified estimate.
Two novel methods of transitioning are proposed to augment existing prognostic …
Multi-Signal Accelerated Degradation Testing Of Rolling Ball Bearings Through Radial Overload, Anna Marie Mazzolini
Multi-Signal Accelerated Degradation Testing Of Rolling Ball Bearings Through Radial Overload, Anna Marie Mazzolini
Masters Theses
Bearings are essential components in rotating machinery found in abundance in nuclear power plants. Bearing failure in nuclear power plants can lead to increased operations and maintenance costs and even plant trips. When developing maintenance procedures, it is ideal to minimize costs and equipment downtime while maximizing safety. Reactive, or run-to-failure, maintenance minimizes maintenance costs at the expense of operation costs and safety. Preventative, or time-based, maintenance maximizes safety and minimizes operation costs at the expense of equipment downtime and maintenance costs. Predictive, or condition-based, maintenance attempts to optimize overall costs while maintaining system safety and reducing downtown.
Predictive maintenance …