A digital twin approach to system-level fault detection and diagnosis for improved equipment health monitoring

TN Nguyen, R Ponciroli, P Bruck, TC Esselman… - Annals of nuclear …, 2022 - Elsevier
Automating the task of fault detection and diagnosis is crucial in the effort to reduce the
operation and maintenance cost in the nuclear industry. This paper describes a physics …

Adversarial fault detector guided by one-class learning for a multistage centrifugal pump

D Cabrera, M Villacis, M Cerrada… - IEEE/ASME …, 2022 - ieeexplore.ieee.org
The data unavailability of critical machinery is an open issue in the field of condition-based
maintenance research. Acquiring signals in all possible health conditions is impractical in …

A New Fault Diagnosis Method Based on Belief Rule Base With Attribute Reliability Considering Multi-Fault Features

H Li, X Yin, W He, Z Feng, Y Cao - IEEE Access, 2023 - ieeexplore.ieee.org
Fault diagnosis plays a critical role in system health management. However, practical fault
diagnosis encounters several challenges such as limited observational information, system …

Physics-based data-augmented deep learning for enhanced autogenous shrinkage prediction on experimental dataset

V Gupta, Y Lyu, D Suarez, Y Mao, WK Liao… - Proceedings of the …, 2023 - dl.acm.org
Prediction of the autogenous shrinkage referred to as the reduction of apparent volume of
concrete under seal and isothermal conditions is of great significance in the service life …

Physics-informed State-space Neural Networks for transport phenomena

AJ Dave, RB Vilim - Engineering Applications of Artificial Intelligence, 2024 - Elsevier
This work introduces Physics-informed State-space neural network Models (PSMs), a novel
solution to achieving real-time optimization, flexibility, and fault tolerance in autonomous …

HSMM multi-observations for prognostics and health management

L Handayani, P Vrignat, F Kratz - … Part O: Journal of Risk and …, 2024 - journals.sagepub.com
An efficient maintenance policy allows for determining the current state of a system
(diagnosis phase) and its future state (prognosis phase). We show in this paper that …

Automatic prediction modeling for Time-Series degradation data via Genetic algorithm with applications in nuclear energy

S Zheng, Y Xiao, J Liu - Annals of Nuclear Energy, 2023 - Elsevier
Time-series data prediction, a predominant problem in fault prediction, enables effective and
efficient predictive maintenance. For time-series data, hybrid methods combining data …

Direct Bayesian inference for fault severity assessment in Digital-Twin-Based fault diagnosis

TN Nguyen, RB Vilim - Annals of Nuclear Energy, 2023 - Elsevier
For applications in condition-based maintenance of nuclear systems, the assessment of fault
severity is crucial. In this work, we developed a framework that allows for direct inference of …

Centrifugal Pump Model for System Codes for Advanced NPP Designs

T Lee, R Ponciroli, AJ Dave, D O'Grady, RB Vilim - 2023 - osti.gov
In this document, a homologous model and one-dimensional line model for centrifugal pump
are described to provide the theoretical background of a pump model to be developed in …

[PDF][PDF] Design and Prototyping of Advanced Control Systems for Advanced Reactors Operating in the Future Electric Grid

R Ponciroli, V Moiseytseva, AJ Dave, TN Nguyen… - 2024 - osti.gov
Despite its significant advantages as a baseload, low-carbon energy source, the US nuclear
power industry has faced increasing difficulties in maintaining economic competitiveness in …