{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T06:25:24Z","timestamp":1773296724893,"version":"3.50.1"},"reference-count":43,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2021,8,13]],"date-time":"2021-08-13T00:00:00Z","timestamp":1628812800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["166723\/2018-5"],"award-info":[{"award-number":["166723\/2018-5"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This study aims at evaluating the efficiency of sensor fusion, based on neural networks, to estimate the microstructural characteristics of both the weld bead and base material in GMAW processes. The weld beads of AWS ER70S-6 wire were deposited on SAE 1020 steel plates varying welding voltage, welding speed, and wire-feed speed. The thermal behavior of the material during the process execution was analyzed using thermographic information gathered by an infrared camera. The microstructure was characterized by optical (confocal) microscopy, scanning electron microscopy, and X-ray Diffraction tests. Finally, models for estimating the weld bead microstructure were developed by fusing all the information through a neural network modeling approach. A R value of 0.99472 was observed for modelling all zones of microstructure in the same ANN using Bayesian Regularization with 17 and 15 neurons in the first and second hidden layers, respectively, with 4 training runs (which was the lowest R value among all tested configurations). The results obtained prove that RNAs can be used to assist the project of welded joints as they make it possible to estimate the extension of HAZ.<\/jats:p>","DOI":"10.3390\/s21165459","type":"journal-article","created":{"date-parts":[[2021,8,13]],"date-time":"2021-08-13T09:22:38Z","timestamp":1628846558000},"page":"5459","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Mild Steel GMA Welds Microstructural Analysis and Estimation Using Sensor Fusion and Neural Network Modeling"],"prefix":"10.3390","volume":"21","author":[{"given":"Leandro Bruno Alves","family":"Caio","sequence":"first","affiliation":[{"name":"Postgraduate Program in Mechatronic Systems (PPMEC), Campus Universit\u00e1rio Darcy Ribeiro, University of Brasilia, Brasilia 70910-900, DF, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alysson Martins Almeida","family":"Silva","sequence":"additional","affiliation":[{"name":"Mechanical Engineering Department, Faculty of Technology, Campus Universit\u00e1rio Darcy Ribeiro, University of Brasilia, Brasilia 70910-900, DF, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6659-441X","authenticated-orcid":false,"given":"Guillermo Alvarez","family":"Bestard","sequence":"additional","affiliation":[{"name":"Electronic Engineering, Faculty of Gama, University of Brasilia, Gama 72405-520, DF, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lais Soares","family":"Vieira","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Mechatronic Systems (PPMEC), Campus Universit\u00e1rio Darcy Ribeiro, University of Brasilia, Brasilia 70910-900, DF, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7426-0687","authenticated-orcid":false,"given":"Guilherme Carib\u00e9","family":"de Carvalho","sequence":"additional","affiliation":[{"name":"Mechanical Engineering Department, Faculty of Technology, Campus Universit\u00e1rio Darcy Ribeiro, University of Brasilia, Brasilia 70910-900, DF, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0361-0555","authenticated-orcid":false,"given":"Sadek Cris\u00f3stomo Absi","family":"Alfaro","sequence":"additional","affiliation":[{"name":"Mechanical Engineering Department, Faculty of Technology, Campus Universit\u00e1rio Darcy Ribeiro, University of Brasilia, Brasilia 70910-900, DF, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,8,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1235","DOI":"10.1007\/s40194-021-01116-0","article-title":"A Review of High Energy Density Beam Processes for Welding and Additive Manufacturing Applications","volume":"65","author":"Patterson","year":"2021","journal-title":"Weld. 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