Measurements of mechanical material properties under compressive and bending load of additive manufactured polymers

This repository contains data ofcompression and bending tests on additively manufactured specimens made of polylactic acid (PLA), polycarbonate (PC), polyamide (PA) and polyethylene terephthalate glycol-modified (PETG). The tests were conducted on a Zwick/Roell Z250 universal testing machine according to the technical standards ISO 178:2019 and ISO 604:2002. The experimental design considers a variation of layer height of the additive manufacturing method in 0.1 mm steps and a variation of number of walls within the interval {1;3;5} walls. All materials were printed with a solid infill (100%). The bending specimens were positioned in a way, so their cylindrical axis is along the z-axis of the 3D printer. The beam specimens for three-point bending were positioned flat on the bed of the 3D printer. Both assured load application perpendicular to the slicing layers. According to our experience, the force travel signals of the compression tests must be compensated by a machine stiffness of 99.056 kN/mm to obtain correct elastic behavior.

本数据集仓库包含针对聚乳酸（PLA）、聚碳酸酯（PC）、聚酰胺（PA）及改性聚对苯二甲酸乙二醇酯（PETG）制成的增材制造（Additive Manufacturing）试样的压缩与弯曲试验数据。试验采用Zwick/Roell Z250万能试验机，依据ISO 178:2019与ISO 604:2002技术标准开展。实验设计中，增材制造工艺的层高以0.1 mm为步长进行变量调控，壁数则在{1;3;5}的区间内调整。所有试样均采用100%实心填充完成打印。弯曲试样的安装方式为其圆柱轴线沿3D打印机的z轴方向；用于三点弯曲的梁形试样则平铺于3D打印机打印平台之上。两种安装方式均确保载荷垂直于切片层施加。根据前期实验经验，需以99.056 kN/mm的机器刚度对压缩试验的力-位移信号进行补偿，以获取准确的弹性力学行为。