A5050269301- Additive Manufacturing Materials and Processes
- Additive Manufacturing and 3D Printing Technologies
- Manufacturing Process and Optimization
- Welding Techniques and Residual Stresses
- High Entropy Alloys Studies
- Innovations in Concrete and Construction Materials
- Robot Manipulation and Learning
- Fusion materials and technologies
- Total Knee Arthroplasty Outcomes
- Nuclear Materials and Properties
- Superconducting Materials and Applications
- Teleoperation and Haptic Systems
- Magnetic confinement fusion research
- Injection Molding Process and Properties
- Advanced machining processes and optimization
- Advanced materials and composites
- Soft Robotics and Applications
- Metal Alloys Wear and Properties
- Prosthetics and Rehabilitation Robotics
- Engineering Technology and Methodologies
- Machine Learning in Materials Science
- Nuclear and radioactivity studies
- Industrial Vision Systems and Defect Detection
- Advanced Machining and Optimization Techniques
- Robotic Mechanisms and Dynamics
Oak Ridge National Laboratory
2016-2025
Government of the United States of America
2024
National Transportation Research Center
2016-2022
Office of Scientific and Technical Information
2022
National Technical Information Service
2022
University of Tennessee at Knoxville
2006-2011
The Big Area Additive Manufacturing (BAAM) system can print structures on the order of several meters at high extrusion rates, thereby having potential to significantly impact automotive, aerospace and energy sectors. functional use such parts, however, may be limited by mechanical anisotropy, in which strength printed parts across successive layers build direction (z-direction) lower than corresponding in-plane (x-y directions). This has been primarily attributed poor bonding between since...
Metal Big Area Additive Manufacturing (MBAAM) is a novel wire-arc additive manufacturing method that uses correction-based approach developed at the Oak Ridge National Laboratory (ORNL). This an integrated software minimizes dynamic nature of welding and compensates for build height. The MBAAM process used to fabricate simple geometry thin walled specimens, using C-Mn steel weld wire, investigate scatter in mechanical properties correlate them underlying microstructure. uni-axial tensile...
Metal Big Area Additive Manufacturing (MBAAM), an additive manufacturing based on wire-arc process, is progressively evolving from rapid prototyping to the industrial scale production. In MBAAM, height of printed part can easily reach eight feet, and printing last for hours or days. For such large structures, distortion residual stress management are primary challenges in production process. Although transient thermo-mechanical simulations with very small time increments have resulted...
Both commercial and research applications of wire arc additive manufacturing (WAAM) have seen considerable growth in the metallic components. However, there remains a clear lack unified paradigm for toolpath generation when slicing parts WAAM deposition. Existing options typically appropriate features to account all complexities process. This manuscript explores key challenges specific toolpaths geometry pairs each consideration with multiple solutions mitigate most negative effects on...
Abstract Realizing application specific manufacture with fusion-based additive manufacturing (F-BAM) processes requires understanding of the physical phenomena that drive evolution microstructural attributes, such as texture. Current approaches for texture in F-BAM are majorly considerate occurring only during solidification. This hinders comprehensive and control F-BAM. In this perspective article, we discuss several after solidification can determine processed stainless steels (SS). A...
Conventional robotic wire arc additive manufacturing technologies enable the rapid production of moderate-sized components using low-cost feedstocks and welding systems. Efforts to date have primarily focused on single robot solutions. However, new configurations are possible with coordination multiple robots multi-degree freedom positioners. This paper describes a multi-agent control paradigm that enables work collaboratively component rotating platform. The advantages this approach...
Wire-based metal additive manufacturing utilizes the ability of to fabricate complex geometries with high deposition rates (above 7 kg/h), thus finding applications in fabrication large-scale components, such as stamping dies. Traditionally, workhorse materials for dies have been martensitic steels. However, thermal gyrations induced during can cause evolution an inhomogeneous microstructure, which leads a significant scatter mechanical properties, especially toughness. Therefore, understand...
Wire arc additive manufacturing (WAAM) is the process by which large, metallic structures are built, layer-by-layer, using a welding to melt wire feedstock. In this process, proper selection of shielding gas plays vital role in achievement structurally acceptable part geometries and quality surface finishes. study, authors used either ternary mix (He, Ar CO2) or binary (Ar gases deposit wall an open loop-controlled WAAM system developed at Oak Ridge National Laboratory’s Manufacturing...
This work investigated the linear thermal expansion properties of a multi-material specimen fabricated with Invar M93 and A36 steel. A sequence tests was performed to investigate viability additively manufactured for lowering coefficient (CTE) in part tooling. beads were on steel base plate using fiber laser system, samples taken from steel, Invar, interface between two materials. The CTE measured 40 °C 150 thermomechanical analyzer, elemental composition studied energy dispersive X-ray...
Wire arc additive manufacturing is a metal process in which the material deposited using welding technology. It gaining popularity due to high deposition rates and faster build time. en-abled robotic manipulators can relatively large-scale parts when compared with other processes. However, size of limited by industrial manipulator being used for process. This limitation overcome fixed configuration multi-robot cell work cooperatively quickly. A closely spaced has flexibility, but it...