论文标题
3D打印机和X射线计算机断层扫描的表征
Characterization of 3D Printers and X-Ray Computerized Tomography
论文作者
论文摘要
3D打印过程需要几个输入才能获得最佳的打印质量。这些设置可能因示例而异，并取决于用户以前的经验。 3D打印的涉及操作参数各不相同，以测试最优性。 38个样品使用四个市售的3D打印机打印：（a）Ultimaker 2扩展+，（b）Delta Wasp，（c）升级E2和（d）Projet MJP。样品曲线包含具有已知孔隙率的立方体和球体大小的均匀和不均匀的分布。使用X射线计算机断层扫描系统扫描这些样品。使用基于AI的分割代码（a）表征这3D打印机的功能成像分析，并找到三个牙齿的三维表面粗糙度和一个砂岩卵石（来自Riverbed）具有自然沉积层的三维表面粗糙度，也与印刷样品值进行比较。牙齿的质量最佳。发现Projet MJP提供了最佳的印刷样品质量，其表面粗糙度最少，几乎接近实际的孔隙率值。不出所料，100％的填充密度值，打印或层高度的最佳空间分辨率以及最低喷嘴速度可提供3D打印的最佳质量。
The 3D printing process flow requires several inputs for the best printing quality. These settings may vary from sample to sample, printer to printer, and depend upon users' previous experience. The involved operational parameters for 3D Printing are varied to test the optimality. Thirty-eight samples are printed using four commercially available 3D printers, namely: (a) Ultimaker 2 Extended+, (b) Delta Wasp, (c) Raise E2, and (d) ProJet MJP. The sample profiles contain uniform and non-uniform distribution of the assorted size of cubes and spheres with a known amount of porosity. These samples are scanned using X-Ray Computed Tomography system. Functional Imaging analysis is performed using AI-based segmentation codes to (a) characterize these 3D printers and (b) find Three-dimensional surface roughness of three teeth and one sandstone pebble (from riverbed) with naturally deposited layers is also compared with printed sample values. Teeth has best quality. It is found that ProJet MJP gives the best quality of printed samples with the least amount of surface roughness and almost near to the actual porosity value. As expected, 100% infill density value, best spatial resolution for printing or Layer height, and minimum nozzle speed give the best quality of 3D printing.
