Online measurement of bead geometry in GMAW-based additive manufacturing using passive vision
Authors:
- Jun XiongJXJun Xiong
- Guangjun ZhangGZGuangjun Zhang
- 9 October 2013
- journal article
- Published by IOP Publishing in Measurement Science and Technology
- Vol. 24 (11) , 115103
Abstract
Additive manufacturing based on gas metal arc welding is an advanced technique for depositing fully dense components with low cost. Despite this fact, techniques to achieve accurate control and automation of the process have not yet been perfectly developed. The online measurement of the deposited bead geometry is a key problem for reliable control. In this work a passive vision-sensing system, comprising two cameras and composite filtering techniques, was proposed for real-time detection of the bead height and width through deposition of thin walls. The nozzle to the top surface distance was monitored for eliminating accumulated height errors during the multi-layer deposition process. Various image processing algorithms were applied and discussed for extracting feature parameters. A calibration procedure was presented for the monitoring system. Validation experiments confirmed the effectiveness of the online measurement system for bead geometry in layered additive manufacturing.Keywords
This publication has 21 references indexed in Scilit:
- Modeling and control of a direct laser powder deposition process for Functionally Graded Materials (FGM) parts manufacturingJournal of Materials Processing Technology, 2013
- Modeling of bead section profile and overlapping beads with experimental validation for robotic GMAW-based rapid manufacturingRobotics and Computer-Integrated Manufacturing, 2013
- Fabrication of geometrical features using wire and arc additive manufactureProceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2012
- Rapid manufacturing of metal components by laser formingInternational Journal of Machine Tools and Manufacture, 2006
- Three-Dimensional Finite-Element Modelling of Deformation in Weld-Based Rapid PrototypingProceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2006
- 3D welding and milling: part II—optimization of the 3D welding process using an experimental design approachInternational Journal of Machine Tools and Manufacture, 2005
- Weld deposition-based rapid prototyping: a preliminary studyJournal of Materials Processing Technology, 2003
- Multivariable adaptive control of the bead profile geometry in gas metal arc welding with thermal scanningInternational Journal of Pressure Vessels and Piping, 2002
- Mold fabrication and modification using hybrid processes of selective laser cladding and millingJournal of Materials Processing Technology, 2001
- Rapid prototyping of metal parts by three-dimensional weldingProceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 1998