Publications

Mar, 2026

Conference Paper

Analysis and Mitigation of Cascading Outages Using an Interaction Graph Addressing Transient Stability

Cascading outages of power systems pose great threats to system security and reliability, potentially leading to large-scale blackouts. For analysis and mitigation of cascading outages, this paper proposes a transient stability-incorporated interaction graph. This graph statistically quantifies the interactions among line outages and instabilities of generators, which can…

Feb, 2026

Journal

Role of Computational Parameters on Predicting Self-Consistent Residual Stress and Distortion during Wire Arc Additive Manufacturing

Production of three-dimensional metallic parts through integration of an articulated robot and gas metal arc welding, also known as wire arc additive manufacturing (WAAM), can produce large-scale components with moderate geometrical complexity. This technology is particularly appealing due to its high deposition rates, scalability, and cost-effective feedstock compared to…

Dec, 2025

ORNL Report

ASINA Integrated Modeling Problem Compendium

Aug, 2025

ORNL Report

(U) ASINA Integrated Modeling FY25 Midyear Report

Jun, 2025

Journal

Efficient Simulation of Cascading Outages Using an Energy Function-Embedded Quasi-Steady-State Model

This paper proposed an energy function-embedded quasi-steady-state model for efficient simulation of cascading outages on a power grid while addressing transient stability concerns. Compared to quasi-steady-state models, the proposed model incorporates short-term dynamic simulation and an energy function method to efficiently evaluate the transient stability of a power gri…

Jun, 2025

Journal

Efficient Simulation of Cascading Outages Using an Energy Function-Embedded Quasi-Steady-State Model

This paper proposed an energy function-embedded quasi-steady-state model for efficient simulation of cascading outages on a power grid while addressing transient stability concerns. Compared to quasi-steady-state models, the proposed model incorporates short-term dynamic simulation and an energy function method to efficiently evaluate the transient stability of a power gri…

Feb, 2025

ORNL Report

(U) ASINA Integrated Modeling FY24 End-of-Year Report

Nov, 2024

Journal

Integrated Top-Down Process and Voxel-Based Microstructure Modeling for Ti-6Al-4V in Laser Wire Direct Energy Deposition Process

Laser-wire metal additive manufacturing (AM) is one of the ideal direct energy deposition (DED) processes for creating large-scale parts with a medium level of complexity. However, the DED process involves complex thermal signatures and wide length scales making the fabrication of realistic AM components and part qualification often reliant on experimental trial-and-error…

Sep, 2024

ORNL Report

(U) ASINA Integrated Modeling FY24 Midyear Report

Sep, 2024

Journal

Analysis and Mitigation of Cascading Failures Using a Stochastic Interaction Graph with Eigen-analysis

In studies on complex network systems using graph theory, eigen-analysis is typically performed on an undirected graph model of the network. However, when analyzing cascading failures in a power system, the interactions among failures suggest the need for a directed graph beyond the topology of the power system to model directions of failure propagation. To accurately quan…

Jun, 2024

ORNL Report

Multiphysics Models and Machine-Learning Algorithms for Energy Efficient Carbon Fiber Production Using Microwave-Assisted Plasma

Apr, 2024

Journal

A Review on Simulation Models of Cascading Failures in Power Systems

Among various power system disturbances, cascading failures are considered the most serious and extreme threats to grid operations, potentially leading to significant stability issues or even widespread power blackouts. Simulating power systems' behaviors during cascading failures is of great importance to comprehend how failures originate and propagate, as well as to deve…