Thomas Feldhausen
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: Process parameter translation strategies for variable directed energy deposition spot size using 316L, copper, and Inconel 625
Process parameter translation strategies for variable directed energy deposition spot size using 316L, copper, and Inconel 625 Open
Directed energy deposition (DED) is a form of additive manufacturing available across a variety of laser spot diameter values, often referred to as spot sizes. However, there is no method to easily transfer process parameters across discre…
View article: Fundamental Path Optimization Strategies for Extrusion-Based Additive Manufacturing
Fundamental Path Optimization Strategies for Extrusion-Based Additive Manufacturing Open
Extrusion-based additive manufacturing processes begin with a software program, called a slicer, that generates layer geometry and fits toolpaths to each layer to define where material is to be extruded or deposited. Before the toolpaths a…
View article: 3D Printed Alumina for Geometrically-Complex Electronic Substrates With High-Performance Printed Conductors
3D Printed Alumina for Geometrically-Complex Electronic Substrates With High-Performance Printed Conductors Open
Traditional high performance electronic substrates are currently fabricated with molds and screens by stacking punched green ceramic tapes and selectively screen printing electrical interconnects with silver-particle pastes and inks. The s…
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: Multiscale characterization of an additively manufactured property graded Ni-base alloy for molten-salts\supercritical-CO2 heat exchangers
Multiscale characterization of an additively manufactured property graded Ni-base alloy for molten-salts\supercritical-CO2 heat exchangers Open
The sequential optimization of strength and corrosion resistance in conventional alloy design procedures often results in a tradeoff between environmental degradation and optimal mechanical properties. A concurrent optimization of these tw…
View article: Leveraging Additive Manufacturing to Fabricate High Temperature Alloys With Co-Designed Mechanical Properties and Environmental Resistance
Leveraging Additive Manufacturing to Fabricate High Temperature Alloys With Co-Designed Mechanical Properties and Environmental Resistance Open
A paradigm shift in the traditional sequential design approaches is critically essential to create application-specific hierarchical and multifunctional materials with superior long-term performance for next-generation energy technologies …
View article: Investigation of Form-and-Print Processing of Wrought Aluminum Alloys for Industrial Applications
Investigation of Form-and-Print Processing of Wrought Aluminum Alloys for Industrial Applications Open
Conventional manufacturing of wrought aluminum alloys generally involves rolling and forming of sheets of aluminum into the finished product. While these processes rapidly produce parts, produced parts are inherently limited to uniform thi…
View article: Local Modification of Cast Aluminum Alloys via the Cast-and-Print Process
Local Modification of Cast Aluminum Alloys via the Cast-and-Print Process Open
Casting of aluminum alloys is a cost-effective way to mass manufacture bulk aluminum parts for automotive applications. However, the casting process requires filling of a mold, which imposes some limitations on the geometries that can be s…
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…
View article: Downselection and Basic Properties of Additively Manufactured ODS Alloys
Downselection and Basic Properties of Additively Manufactured ODS Alloys Open
In the AMMT program the work package for development of new materials aimed to explore the advanced manufacturing techniques that are feasible for the manufacturing of advanced materials components. A merit-based feasibility study was atte…
View article: Leveraging Additive Manufacturing to Fabricate High Temperature Alloys With Co-Designed Mechanical Properties and Environmental Resistance
Leveraging Additive Manufacturing to Fabricate High Temperature Alloys With Co-Designed Mechanical Properties and Environmental Resistance Open
A paradigm shift in the traditional sequential design approaches is critically essential to create application-specific hierarchical and multifunctional materials with superior long-term performance for next-generation energy technologies …
View article: Data-Driven Approaches for Bead Geometry Prediction Via Melt Pool Monitoring
Data-Driven Approaches for Bead Geometry Prediction Via Melt Pool Monitoring Open
In the realm of additive manufacturing, the selection of process parameters to avoid over and under deposition entails a time-consuming and resource-intensive trial-and-error approach. Given the distinct characteristics of each part geomet…
View article: OPERATOR 4.0 FOR HYBRID MANUFACTURING
OPERATOR 4.0 FOR HYBRID MANUFACTURING Open
Hybrid manufacturing, a combination of additive and subtractive manufacturing capabilities in one system, has recently become a more viable production option across several industries. Although current hybrid manufacturing research covers …
View article: Effect of Blown Powder Directed Energy Deposition Angle On Overspray Contamination
Effect of Blown Powder Directed Energy Deposition Angle On Overspray Contamination Open
Blown powder directed energy deposition (DED) hybrid machine tools are particularly beneficial when the net shape of a component is to be manufactured in an additive and machined interleaved fashion. This investigation seeks to analyze the…
View article: Validating the Use of Gaussian Process Regression for Adaptive Mapping of Residual Stress Fields
Validating the Use of Gaussian Process Regression for Adaptive Mapping of Residual Stress Fields Open
Probing the stress state using a high density of measurement points is time intensive and presents a limitation for what is experimentally feasible. Alternatively, individual strain fields used for determining stresses can be reconstructed…