US – Page 15 – TechConnect Briefs

Systematic Characterization and Evaluation of Grid-connected Flow Battery Systems

Taube B., Johnson R., McQuilling A., Leufkens P., Hamzavy B., Southern Research, US

This paper provides an overview of flow technologies and how the ESRC’s research and test center of excellence supports the evaluation and validation of various grid-scale flow battery technologies, with systematic characterization and evaluation including: [...]

Quasi-Electrostatic Simulation of Energy Density Limits and Variability in Nanoparticle Composite Materials

Costello B., Davis J.A., Georgia Institute of Technology, US

To understand the limits and opportunities of nanoparti- cle (NP) composite materials, it is imperative to better un- derstand the heterogeneous electric field distributions within such materials. Using a custom-built simulator, the electric field is [...]

Additive Manufacturing of 3D Face Masks for Biometric Spoofing

Christie L., Mancuso K., Fedorishin D., Schneider P., Stone A., Oh K., University at Buffalo, US

Biometric security systems such as Apple’s FaceID have replaced passwords for mobile device security, leav- ing users susceptible to biometric spoofing attacks. In response, Apple has implemented an anti-spoofing scheme, looking for autonomous ocular movement [...]

Exploring Process-Properties Relationships of 3D-Printed PLA: Towards Process- Informed Simulation and Design

Grant A., Ellis B.D., Rais-Rohani M., Hajiha R., University of Maine, US

The simulation of additively manufactured (AM) Polylactic Acid (PLA) tensile specimen is discussed. The procedure of evolution and use of a material definition for finite element simulation (FEA) of Polylactic Acid (PLA) printing is discussed, [...]

Design and Manufacture of a Functional 3D-Printed Stirling Engine: A Case Study Involving Bound Metal Deposition of 17-4 PH

Campbell Q., Filiault M., Rooney K., Belding J., Ellis B.D., University of Maine, US

Bound metal deposition (BMD) is a recently commercialized additive manufacturing of metal (AMM) process in which metal powder-binder composites are printed, debound, and sintered. Although potentially offering significant costs savings compared to traditional AMM process, [...]

A Multiscale Modeling Suite for Part Qualification in Metal Additive Manufacturing

Liu J., Liu Z., Jalalahmadi B., Liu J., Liu Z., McReynolds M., Rios J., Sentient Science, US

Metal Additive Manufacturing (AM) shows great potential for producing light-weight structures, reducing development cost and lead time in critical industies such as aerospace and medical device. However, a major barrier that remains is rapid qualification [...]

Shear Induced Crystallization through Altering Flow Area of Polymer Melt in Additive Manufacturing

Noor H., Alqosaibi K., Duhduh A., Kundu A., Coulter J., Lehigh University, US

Additive manufacturing is a new paradigm of fabricating products. The ability to build near-net shapes by depositing layer by layer in additive manufacturing have provided a time and energy efficient processing strategy whose full potential [...]

A Vision toward Layer-wise Intelligent Monitoring and Control of Scan Strategy in Powder-bed Fusion Process

Malekipour E., El-Mounayri H., Al Hasan M., Faierson E.J., Purdue School of Engineering and Technology, US

Despite significant developments in metal powder-bed fusion (PBF) additive manufacturing (AM) process, some frequent thermal anomalies hinder the repeatability and uniformity in mechanical properties of printed parts. Controlling the thermal evolution of the fabrication process [...]

Post-Processing Effects on 3D Dynamic Models Created from Additive Manufacturing

Fedorishin D., Stone A., Eadie N., Christie L., Schneider P., Oh K., University at Buffalo, US

Recent advancements in 3D printing have made it a more viable option for rapid and inexpensive modeling of three dimensional (3D) dynamic systems. This shift in modeling techniques comes with inherent issues. The rough finish [...]

Investigation of a Hybrid Hot Runner System to Increase the Efficiency of Injection Molding and Improve the Quality of Molded Parts

Alqosaibi K., Thakur C., Duhduh A., Kundu A., Coulter J.P., Lehigh University, US

Hot runner systems are prevalent in the manufacturing of thin walled polymers parts. There are great challenges in industries associated with the quality of the molded parts when utilizing a hot runner system. One of [...]