Abstract
ABSTRACT The present study aimed to optimize the composition of 3D printing critical process parameters (nozzle temperature, layer thickness, and printing speed) to maximize the tensile strength and flexural strength of the biodegradable 3D printed PLA specimen using response surface methodology. For this purpose, after using the CCD of experiments with three independent parameters with two levels, 20 flat PLA parts were produced with an FDM-based 3D printer. The mechanical behavior of the 3D-printed PLA part was investigated, and a model was developed from the three parameters to get the scientific information to optimize the responses. As a result, it was noticed that the layer thickness and nozzle temperature greatly influenced mechanical response. One of the major aspects of the coronary stent is the mechanical behavior should be in accordance with the medical requirements such as flexibility, which is very necessary to facilitate the placement of the vessel in the artery, and sufficient radial rigidity is also required to support the vessel. Based on this aspect the identified responses are tensile and flexural strength.
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