The main objective of this research study is to optimize the printing parameters that can be used in the FDM (fusion deposition modeling) production method to obtain the lowest production time and best printing parameter of PLA (polylactic acid) filament with the tensile test. The printing parameter that can be used in FDM machines such as extruder temperature, bed temperature, layer height, printing speed, travel speed, infill, and shell count is taken into account for optimization. In addition, the tensile specimens from ASTM (American Society for Testing and Materials) D638 standard were manufactured by PLA filament with the above-modified printing parameters. The best printing parameters for PLA products were found by the time recorded during production and tensile test results after production. Thus, through this research, one can find the best PLA filament printing parameters and their timing.

中文翻译：

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基于力学试验的聚乳酸长丝3D打印工艺参数优化

本研究的主要目的是优化可用于 FDM（熔合沉积成型）生产方法的印刷参数，以通过拉伸试验获得 PLA（聚乳酸）长丝的最短生产时间和最佳印刷参数。可在 FDM 机器中使用的打印参数，例如挤出机温度、床温、层高、打印速度、行进速度、填充量和壳数都被考虑在内以进行优化。此外，ASTM（美国测试与材料协会）D638 标准的拉伸试样是由 PLA 长丝制造的，具有上述修改的印刷参数。PLA产品的最佳印刷参数是通过生产过程中记录的时间和生产后的拉伸测试结果来确定的。因此，通过本研究，