Laser powder bed fusion process and structure data set, spring 2022

This dataset is a series of synchronized process input and output measurements, and structural data, for laser powder bed fusion. The material is IN718. The input and output data are available in both raw and processed form, in both .csv format and MATLAB .mat format. The measured inputs are real-time measurements of the laser power and position commands, real-time trigger signals for synchronizing the measurement devices, and the set point of the beam radius. There are two classes of process outputs: 1) thermographic videos from infrared cameras that are mounted in the build chamber and coaxially with the beam path, respectively, and 2) temperature measurements from thermocouples that are embedded within all test Samples. The structural data are micrographs of the the as-built Sample surfaces. This dataset contains measurements from 8 Samples: four Samples have a rectangular cross-section, and four Samples have an I-beam-shaped cross section. Data are collected in three regimes of testing: 1) at a low beam power, such that the dominant mode of heat transfer in the Samples is conduction, 2) in conditions that provoke melting in the exposed Samples surfaces, and 3) building five new layers of material atop all Samples. The data descriptor article for this dataset is still under peer review and this description will be updated with the relevant DOI once the article is published.

本数据集为激光粉末床熔融（Laser Powder Bed Fusion）领域的同步过程输入输出测量数据与结构数据，所用材料为IN718。输入与输出数据同时提供原始与处理后两种格式，支持.csv与MATLAB .mat两种文件存储。所测得的输入量包括：激光功率与位置指令的实时测量值、用于同步各测量设备的实时触发信号，以及光束半径的设定值。过程输出分为两类：1）分别安装于成型舱内以及与光束路径同轴位置的红外相机拍摄的热成像视频；2）嵌入所有测试试样的热电偶测得的温度数据。结构数据为成型后试样表面的显微照片。本数据集包含8个试样的测量数据：其中4个试样为矩形截面，剩余4个为工字形截面（I-beam-shaped）。数据采集于三种测试工况：1）低光束功率工况，此时试样内的主导传热模式为热传导；2）使试样暴露表面发生熔化的工况；3）在所有试样上方沉积五层新材料的工况。本数据集对应的描述文章仍处于同行评审阶段，待文章正式发表后，将补充相关数字对象标识符（DOI）以更新本说明。