Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
LASER SCANNING METHOD FOR DETERMINATION OF GEOMETRIC QUALITY PARAMETERS OF PREFORMS PRODUCED BY WIRE + ARC ADDITIVE MANUFACTURING
Submission Author:
Igor Felice , MG , Brazil
Co-Authors:
Igor Felice, Danielle Monteiro Souza, Leandro João Da Silva, Douglas Araujo, Ruham Reis
Presenter: Igor Felice
doi://10.26678/ABCM.COBEM2019.COB2019-0939
Abstract
In wire + arc additive manufacturing (WAAM), the construction of preforms closer to the final geometry, that is, with a lower buy-to-apply ratio, reflects less post-processing and higher productivity. This factor becomes even more important for materials of high cost and tough machinability. In addition, rework and/or spoilage due to geometric deviation during deposition represent significant losses. Therefore, in-situ non-invasive monitoring approaches are of great interest. In this sense, the present work aims to evaluate and validate a software developed with Matlab® for non-invasive geometric verification in-situ based on image analysis, making use of a reference part. The projection of a laser line on the lateral surface of the structure at three levels of inclination was filmed while the wall moves at constant speed. Through the software, the surface has been virtually rebuilt. These outcomes were compared to the known dimensions of the reference. The results obtained demonstrate that such method was able to verify surface form and waviness deviations and those errors can be minimized with parameter optimization. Thus, the methodology has potential and the parameters lack more studies to improve the results.
Keywords
waam, CMT, non-invasive evaluation, geometry quality, image analysis
