Presenter(s)

Ajith Kumar Veeraboina

Comments

Presentation: 1:15-2:30, Kennedy Union Ballroom

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Description

Additive manufacturing (AM) technology is rapidly advancing across diverse fields. For instance, the use of robotic arms in various AM processes has led to significant gains in printing flexibility and manufacturing scalability. However, despite these advancements, there remains a notable research gap concerning the mechanical properties of parts 3D-printed with robotic arms. This study focuses on developing a robotic fused filament fabrication (FFF) 3D-printing process with a layer resolution of 50 μm to 200 μm. We propose a novel planar tool path strategy that can vary contour layer thickness within an infill layer to improve mechanical strength by minimizing air gaps between contours. SEM images suggest this new tool path strategy leads to a meaningful reduction in void area fraction within contours, confirmed by a nearly 6% increase in ultimate tensile strength. In addition, we also propose a strategy for creating a non-planar tool path along axial direction for thin-shell 3D models, utilizing planar slicing. This strategy includes segmentation of the point cloud and printing non-planar layers on top of the printed planar layers in a systematic order. This approach might guarantee bonding between deposited polymer paths in different directions. Therefore, yields a significant improvement in mechanical properties.

Publication Date

4-17-2024

Project Designation

Graduate Research

Primary Advisor

Temesguen Messay Kebede, Robert L. Lowe, Amy T. Neidhard-Doll, Raul E. Ordonez

Primary Advisor's Department

Electrical and Computer Engineer

Keywords

Stander Symposium, School of Engineering

Surface Reinforcement Strategies for Polymer-based 3D Printing with Industrial Robotic Arm

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