US – Page 9 – TechConnect Briefs

Experimental and Analytical Analysis for Advanced Hot Runner Based Injection Molding

Alqosaibi K., Thakur C., Noor H., Almalki A., Duhduh A., Coulter J.P., Lehigh University, US

A novel technology “Rheodrop” was developed to advance the process of hot runner based injection molding. The technology applies controllable shear rate to the polymer melt during and between injection molding cycles. The application method [...]

Vibration Assisted Injection Molding: An Innovative Energy Efficient Processing Technique for Poly-Lactic Acid (PLA) with Enhanced Properties

Gao P., Duhduh A., Xing J., Kundu A., Coulter J.P., Lehigh University, US

This work is focused on the development of time and energy efficient injection molding processing strategies to fabricate semi-crystalline plastic components with enhanced properties. A Vibration Assisted Injection Molding (VAIM) process was devised for this [...]

Investigation of Bulk Metallic Glass Tooling Lifetime for Microinjection Molding

Almalki A., Rajhi A., Noor H., Kundu A., Coulter J.P., Lehigh University, US

The lifetime of a commercially available zirconium based bulk metallic glass (BMG) for microinjection molding (μIM) was investigated in this research. The primary objective was to understand the effect of the molding conditions on the [...]

Investigation of Fidelity of Micro Molded Features Using Microinjection Molding Process

Rajhi A., Almalki A., Coulter J.P., Lehigh University, US

This paper investigates the influence of selected processing parameters of microinjection molding on the replication fidelity of micro molded features. Parameters were altered in order to find to what extent the microfeatures can be stretched [...]

At the frontier of in-space production: Harnessing microgravity for manufacturing

Reeves R.D., Savin K.A., Center for the Advancement of Science in Space, US

Since the dawn of human space exploration, there have been dreams of manufacturing products in space of such quality and novelty that they improve life on Earth. And over the past 50 years, microgravity research [...]

Layered Structures – Innovative Tube/Pipe Manufacturing Process

Ritchie C., McNeil K., Techreo, US

High Performance Tubular Structures (HPTS) is an emerging technology being developed by Techreo in the Cincinnati, Ohio area. HPTS will provide breakthrough performance advantages in a wide range of metal tubular structures, including pipes transporting [...]

A Learning-based Approach to Cover Short-term Camera Failure in a Monocular Visual Inertial Odometry System

Tian Y., Compere M., Embry-Riddle Aeronautical University, US

Localization and navigation have multiple established methods in sensing and fusion algorithm. Previous studies use different sensors such as Global Navigation Satellite System (GNSS) and Global Inertial Navigation System (GINS) using GPS and an inertial [...]

Robot Axis Control Using a Differential Learning Algorithm

Abegaz B., Loyola University of Chicago, US

The motion control of robotic arms using brushless DC motors has been implemented using various mechanisms, including a model predictive controller (MPC), a fuzzy controller and supervised machine learning methods. In order to provide a [...]

Tension prediction using web moving speed and natural vibration frequency

Du X., Yan J., University of Massachusetts Amherst, US

The characterization of web dynamics is critical for web handling and process control of roll-to-roll (R2R) manufacturing systems. One such critical characterization parameter is the tension in a moving web, which ultimately determines the efficacy [...]

Vibration Assisted Injection Molding for PLA with Enhanced Mechanical Properties and Reduced Cycle Time

Duhduh A., Kundu A., Coulter J., Lehigh University, US

Vibration assisted molding (VAIM) is a process in which vibrational movement is introduced to the injection screw during the injection stage of molding processes. This research was focused on the effect of processing parameters on [...]