Additive Manufacturing (AM) has recently attracted increasing attention among manufacturing industries. This class of technologies is capable of creating parts with complex shapes and intricate structures. However, the poor geometric quality of the parts they produced is a major constraint in wide industrial adoption. Currently available analytical techniques based on classic measurement equipment could fail in analyzing the process parameters based on AM-created parts because of the layer-by-layer fabrication process. In this article, we introduce a novel three-dimensional point-cloud-based analytical toolset, volumetric data analysis (VDA), for AM-oriented metrological and experimental analysis. Each step of the VDA is discussed in detail. A high dimensional hypothesis testing procedure is proposed to compare the geometric precision of the part samples from two printing settings. New visualization tools for deviation diagnostics are presented to aid in interpreting and comparing the process outputs. The proposed methods are illustrated with a real experiment to compare the effects of different layer thicknesses in a filament deposition modeling printing process.

增材制造（AM）最近在制造业中引起了越来越多的关注。此类技术能够创建具有复杂形状和复杂结构的零件。但是，零件生产的几何质量差是广泛采用工业生产的主要限制。由于逐层制造工艺，基于经典测量设备的当前可用分析技术可能无法基于AM创建的零件来分析工艺参数。在本文中，我们介绍了一种新颖的基于三维点云的分析工具集，即体积数据分析（VDA），用于面向AM的计量和实验分析。VDA的每个步骤都将详细讨论。提出了一种高维假设检验程序，以比较来自两个印刷设置的零件样本的几何精度。提出了用于偏差诊断的新可视化工具，以帮助解释和比较过程输出。通过实际实验说明了所提出的方法，以比较细丝沉积建模印刷过程中不同层厚度的影响。