About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Ultrasonic Vibration Augmented Fused Deposition Modeling through Step-wise Contour Scanning |
Author(s) |
Raihan Quader, Lokesh Karthik Narayanan |
On-Site Speaker (Planned) |
Raihan Quader |
Abstract Scope |
FDM parts have low mechanical strength due to the voids from freeform deposition of polymers. We proved that applying ultrasonic vibration in between printing of layers can reduce voids and increase interlayer adhesion, resulting in better mechanical properties. This research presents an image processing algorithm to detect the contour of a part being printed and create toolpaths. From the detected coordinates, a step-wise contour scanning algorithm is developed to control positioning of a sonicator probe. An FDM printer is augmented with custom motorized rig to mount and move the sonicator probe in three dimensions through Raspberry Pi and Python programming. A custom g-code is used to pause and resume the printing of samples after predetermined layers are deposited. Layer-specific ultrasonic powers for inducing squeeze flow are determined through temperature monitoring by utilizing a thermal camera. Effect of this in-situ ultrasonic application technique on tensile properties is characterized. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |