DOI: 10.57745/cm2woi
title: Bichromatic melt pool thermal measurement based on a Red, Green, and Blue camera: application to additive manufacturing processes

description: The data presented here are related to the research article : "Bichromatic melt pool thermal measurement based on a Red, Green, and Blue camera: application to additive manufacturing processes". https://doi.org/10.1016/j.optlastec.2023.109799 Date : Feburary 2023 e-mail : loic.jegou@insa-lyon.fr The measure of temperature fields during additive manufacturing processes usually requires bulky expansive equipement such as infrared cameras. A compact full field thermal sensor was developped in order to accurately measure the temperature and the morpholgy of the melt pool during these processes. It is based on a dual-wavelength radiometrioc model and designed to measure temperatures ranging from 1000K to 2500K. The system is calibrated on a blackbody and a tungsten ribbon lamp. This method is validated with two distinct experiments: -Induction heating of a 316L stainless steel tube in a controlled environnement. The temperature is measured with type K thermocouples and compared to the one measured with the camera. In a first experiment, the tube is placed in an open environnement (with oxygen). In a second experiment, the tube is place in an environnement filled with argon that delays its oxidation. -Fusion of a vanadium rod (with a purity of 99.8%) with a laser impulsion of 350 W for 2 seconds. The fusion temperature of pure vanadium is 2183K, and the camera was used to assess the position of the solidifcation front during the experiment. The camera is then used on two different additive manufacturing processes to identify thermal gradients and highlight the melt pool contours. -Laser metal deposition with powder (LMDP). It consists in melting a small section of a substrate with a highly focused energy source, and continuously delivering feedstock material in this melt pool in the form of powder, layer by layer. The camera captures uspide views of the melt pool. -Wire arc additive manufacturing (WAAM). It is based on Gas Metal Arc Welding processes and consists of melting a metal wire onto the substrate with an electric arc as the heat source. The camera captures side views of the melt pool. Please use appropriate citations and referencing while using this dataset by any means. Contributing authors: Loïc Jegou, Joel Lachambre, Nicolas Tardif, Mady Guillemot, Anthony Dellarre, Abderrahime Zaoui, Thomas Elguedj, Valerie Kaftandjian and Nicolas Beraud. Any further information could be asked by making a legitimate request to: Loïc Jegou (loic.jegou@insa-lyon.fr) and Nicolas Tardif (nicolas.tardif@insa-lyon.fr) The folder contains 4 subfolders for every experiments described in the article. Each subfolder contains one folder (image) with the raw images in the format tiff, and a csv file (images_informations.csv) with every informations about the pictures (identification, exposure time, gain, timestamp). - Subfolder 1: Induction_heating, induction heating of a 316L stainless steel tube, - Subfolder 2: Fusion_vanadium, fusion of a Vanadium rod, - Subfolder 3: LMDP, laser metal deposition (with powder), - Subfolder 4: WAAM, wire arc additive manufcaturing. Please refer to the paper for any further scientific details.