Abstract
Fused deposition modeling 3D printing has become the most widely used additive manufacturing technology because of its low manufacturing cost and simple manufacturing process. However, the mechanical properties of the 3D printing parts are not satisfactory. Certain pressure and ultrasonic vibration were applied to 3D printed samples to study the effect on the mechanical properties of 3D printed non-crystalline and semi-crystalline polymers. The tensile strength of the semi-crystalline polymer polylactic acid was increased by 22.83% and the bending strength was increased by 49.05%, which were almost twice the percentage increase in the tensile strength and five times the percentage increase in the bending strength of the non-crystalline polymer acrylonitrile butadiene styrene with ultrasonic strengthening. The dynamic mechanical properties of the non-crystalline and semi-crystalline polymers were both improved after ultrasonic enhancement. Employing ultrasonic energy can significantly improve the mechanical properties of samples without modifying the 3D printed material or adjusting the forming process parameters.
Highlights
In fused deposition modeling (FDM) 3D printing technology, the printed material is heated by nozzle, melts, and is ejected with a certain pressure through the nozzle
We studied the effects of the main ultrasonic strengthening parameters on the tensile mechanical properties of 3D printed acrylonitrile butadiene styrene (ABS) samples by a controlled variate method [30]
The results indicated that, with ultrasonic strengthening, the tensile, bending, and dynamic mechanical properties of the non-crystalline polymer
Summary
In fused deposition modeling (FDM) 3D printing technology, the printed material is heated by nozzle, melts, and is ejected with a certain pressure through the nozzle. The nozzle moves along the XY plane, and the extruded material is fused with the former layer. FDM 3D printing allows a customized sample with a complex structure to be rapidly formed using thermoplastic materials [3,4,5]. Thermoplastic materials such as acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA) are the most widely used FDM 3D printed materials [6,7].
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