Engineering topics
Jared, Bradley Howell
Publications and source records attributed to Jared, Bradley Howell.
Shock Propagation and Deformation in Additively Manufactured Materials.
Abstract not provided.
Localized Corrosion of Additively Manufactured Stainless Steels.
Abstract not provided.
Melt Pool Boundaries and the Corrosion of Laser Powder Fusion Stainless Steels.
Abstract not provided.
Process Driven Properties: A High-Throughput Tensile Study of Additively Manufactured 316L Stainless Steel.
Abstract not provided.
Topological damping materials and methods thereof
The present invention features a metamaterial including a plurality of unit cells, in which each unit cell includes two interacting members to dissipate energy. Also provided herein are assemblies including such metamaterials and methods of manufacture.
Deep Convolutional Neural Networks as a Rapid Screening Tool for Complex Additively Manufactured Structures.
Abstract not provided.
Tailoring Hierarchical Material Performance Through Process Manipulation.
Abstract not provided.
Prediction and Validation of Residual Stress and Distortion Across Processes and Length Scales.
Abstract not provided.
Understanding Microstructural Effects on Dynamic Performance Towards the Development of Shock Metamaterials
With the recent advances in additive manufacturing (AM), long-range periodic lattice assemblies are being developed for vibration and shock mitigation components in aerospace and military applications with unique geometric and topological structures. There has been extensive work in understanding the static properties associated with varying topology of these lattice architectures, but there is almost no understanding of microstructural affects in such structures under high-strain rate dynamic loading conditions. Here we report the shock behavior of lattices with varying intrinsic grain structures achieved by post process annealing. High resolution 316L stainless steel lattices were 3D printed by a laser-powder bed fusion machine and characterized by computed tomography. Subsequent annealing resulted in stress-relieved and recrystallized lattices. Overall the lattices had strong cubic texture aligning with the x-, y- and z-directions of the build with a preference outside the build direction (z). The recrystallized sample had more equiaxed polygonal grains and a layer of BCC ferrite at the surface of the structure approximately 1 grain thick. Upon dynamic compression the as-deposited lattice showed steady compaction behavior while the heat-treated lattices exhibit negative velocity behavior indicative of failure. We attribute this to the stiffer BCC ferrite in the annealed lattices becoming damaged and fragmenting during compression.
316L Powder Influence on Part Performance: A Path to Creating Specifications.
Abstract not provided.