A5000788993- Additive Manufacturing and 3D Printing Technologies
- High Temperature Alloys and Creep
- Additive Manufacturing Materials and Processes
- Metallurgy and Material Forming
- Fatigue and fracture mechanics
- Welding Techniques and Residual Stresses
- Hydrogen embrittlement and corrosion behaviors in metals
- Engineering Technology and Methodologies
- Metallurgical Processes and Thermodynamics
- Probabilistic and Robust Engineering Design
- Nuclear Materials and Properties
- Fusion materials and technologies
Georgia Institute of Technology
2022-2024
Argonne National Laboratory
2021
Abstract Predicting the life of thermomechanical fatigue (TMF) is challenging because there are several parameters describing mechanical and thermal cycles including dwell periods within cycle that can impact life. The relationships between these TMF history not always clear. This paper explores use a neural network (NN) with probabilistic physics‐guided architecture to learn predict failure for wide range possible creep‐fatigue histories. Using inputs strain range, maximum minimum...
Abstract This study examines the low-cycle fatigue (LCF) and creep-fatigue (CF) behavior of wrought 316L 316H stainless steels to develop acceptance criteria for accelerated testing additively manufactured (AM) steels. New LCF CF data were generated between 550 700°C, focusing on impact temperature, control mode, hold time life. Life assessment methods, including fraction (TF), ductility exhaustion (DE), stress-modified DE (SMDE), evaluated their applicability nuclear code cases. Results...
Abstract Ni-base superalloys used for hot section hardware of gas turbine systems experience thermomechanical fatigue (TMF), creep, and environmental degradation. The blades vanes industrial turbines (IGTs) are made from that either directionally-solidified (DS) or cast as single crystals (SX). Consequently, designing evaluating these alloys is complex since life depends on the crystallographic orientation in addition to complexities related cycling extent hold times at elevated temperature....