Yousub Lee
YOU?
Author Swipe
View article: Simulation driven adaptive sampling for neutron-diffraction based strain mapping of additively manufactured parts <sup>*</sup>
Simulation driven adaptive sampling for neutron-diffraction based strain mapping of additively manufactured parts <sup>*</sup> Open
Neutron diffraction based strain mapping is a useful technique for measuring residual strains in additively manufactured (AM) metal parts. The measurement is traditionally done by scanning the sample in a point-wise raster pattern to extra…
View article: Mechanical and thermal behavior of additively manufactured Invar 36 using a laser hot wire hybrid DED process
Mechanical and thermal behavior of additively manufactured Invar 36 using a laser hot wire hybrid DED process Open
Invar 36 alloy is a material of high interest in the composite tooling sector due to its low coefficient of thermal expansion. Current production of Invar 36 tooling using traditional manufacturing such as casting and forging is associated…
View article: Strength-ductility synergy through microstructural and compositional heterogeneity in directed energy deposition additive manufacturing of face-centered cubic materials
Strength-ductility synergy through microstructural and compositional heterogeneity in directed energy deposition additive manufacturing of face-centered cubic materials Open
Directed energy deposition (DED) is an additive manufacturing (AM) process based on welding technology and offers the advantages of large build volume, high deposition rate, and ability to fabricate multi-material parts. Epitaxial continuo…
View article: Controlling microstructure and B2 ordering kinetics in Fe–Al system through additive manufacturing
Controlling microstructure and B2 ordering kinetics in Fe–Al system through additive manufacturing Open
Multi-material fabrication between steel and aluminum is challenging because of the formation of several intermetallic phases. Embrittling B2 ordered intermetallics form in the steel rich side and are stable till about 60% of Al dilution i…
View article: Influence of printing parameters on the mechanical behavior of 3D-printed SS316L parts manufactured using laser hot wire directed energy deposition
Influence of printing parameters on the mechanical behavior of 3D-printed SS316L parts manufactured using laser hot wire directed energy deposition Open
Hybrid manufacturing combines the simultaneous benefits of additive manufacturing (complex geometries, part consolidation, and mass customization) with the advantages of subtractive manufacturing (superior surface finish and enhanced dimen…
View article: Self-supervised feature distillation and design of experiments for efficient training of micromechanical deep learning surrogates
Self-supervised feature distillation and design of experiments for efficient training of micromechanical deep learning surrogates Open
Machine learning surrogate emulators are needed in engineering design and optimization tasks to rapidly emulate computationally expensive physics-based models. In micromechanics problems the local full-field response variables are desired …
View article: Integrated Process and Materials Modeling for Development of Additive Manufacturing of Refractory Materials for Critical Applications
Integrated Process and Materials Modeling for Development of Additive Manufacturing of Refractory Materials for Critical Applications Open
The research is focused on establishing computational framework, fundamental knowledge, and powder direct energy deposition (DED) capabilities for accelerating the use of refractory metals for gas turbine generation, which is considered a …
View article: Effect of Inter-layer Cooling Time on Distortion and Mechanical Properties in Metal Additive Manufacturing (AM)
Effect of Inter-layer Cooling Time on Distortion and Mechanical Properties in Metal Additive Manufacturing (AM) Open
Laser Metal Deposition with wire (LMD-w) is one of the novel Direct Energy Deposition (DED) processes that is gaining attention in aerospace industry due to the potential cost and lead time reductions for large-scale components. However, i…
View article: Correlations of Interlayer Time with Distortion of Large Ti-6Al-4V Components in Laser Metal Deposition with Wire
Correlations of Interlayer Time with Distortion of Large Ti-6Al-4V Components in Laser Metal Deposition with Wire Open
Laser metal deposition with wire (LMD-w) is one of the emerging additive manufacturing (AM) technologies for large-scale aerospace components due to high deposition rates and material efficiency. However, it often results in undesired stre…
View article: Review of in situ process monitoring for metal hybrid directed energy deposition
Review of in situ process monitoring for metal hybrid directed energy deposition Open
Hybrid manufacturing, or the combination of additive and subtractive manufacturing within a single build volume is transforming the way products are being fabricated. Additive manufacturing confers unprecedented freedom of design and reduc…
View article: Repairing High γ’ Hot Section Gas Turbine Components Using Advanced Manufacturing
Repairing High γ’ Hot Section Gas Turbine Components Using Advanced Manufacturing Open
This article describes the ability to use laser-blown powder deposition to repair high γ’ IN-100 superalloy gas turbine components. The influence of various process conditions on the ability to make crack-free IN-100 deposits over surrogat…
View article: Prediction and understanding of non-linear distortion on large curved wall manufactured by wire-arc direct energy deposition
Prediction and understanding of non-linear distortion on large curved wall manufactured by wire-arc direct energy deposition Open
Wire-arc direct energy deposition (wire-arc DED) has been developed to manufacture large-scale metal products with high deposition rates, low material cost, and high material efficiency. However, dynamically varying printing conditions and…
View article: In-Situ Monitoring Assisted Large-Scale Additive Manufacturing of Mild Steel and 316L Alloys for Nuclear Application
In-Situ Monitoring Assisted Large-Scale Additive Manufacturing of Mild Steel and 316L Alloys for Nuclear Application Open
The Advanced Materials and Manufacturing Technologies (AMMT) Program is aimed at developing cross-cutting technologies in support of a broad range of nuclear reactor parts, and to maintain U.S. leadership in materials and manufacturing tec…