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3D-Scanning for Weld Distortion Measuring
University West, Department of Technology, Mathematics and Computer Science, Division for Electrical Engineering and Land Surveying.ORCID iD: 0000-0001-5734-294X
University West, Department of Technology, Mathematics and Computer Science, Division for Electrical Engineering and Land Surveying.ORCID iD: 0000-0002-4329-418X
University West, Department of Technology, Mathematics and Computer Science, Division for Mechanical Engineering.ORCID iD: 0000-0001-7787-5444
University West, Department of Engineering Science.ORCID iD: 0000-0001-5608-8636
2006 (English)In: Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE, IEEE conference proceedings, 2006, p. 2132-2137Conference paper, Published paper (Refereed)
Abstract [en]

Optical three dimensional scanning for weld distortion measurements have been performed for validation, inspection, general visualization and documentation of a robotized welding process. The planning, preparing and processing of the weld is done in a simulation-based concept where computer aided robotics software simulations are integrated with finite element analysis simulations with the objective to reduce global geometrical deformation during welding. The off-line programmed robot paths were used as an input for finite element calculations of temperature fields and distortion in the work piece. In order to validate the finite element model 3D-scannings have been performed before and after every single welding sequence. This paper describes a validation experiment with non-contact measurements of weld distortion and discusses limitations in optical 3D-scanning techniques used for this purpose

Place, publisher, year, edition, pages
IEEE conference proceedings, 2006. p. 2132-2137
Series
Conference proceedings - IEEE Instrumentation/Measurement Technology Conference, ISSN 1091-5281
Keywords [en]
computer aided manufacturing, deformation, finite element analysis, mechanical variables measurement, optical scanners, robotic welding, welds, computer aided robotics software simulations, finite element analysis simulations, global geometrical deformation reduction, offline programmed robot paths, optical 3D scanning, robotized welding, temperature fields, weld distortion measurement, 3D-scanning, distortion, model validation, robotics, welding
National Category
Electrical Engineering, Electronic Engineering, Information Engineering Production Engineering, Human Work Science and Ergonomics
Research subject
ENGINEERING, Mechatronics; ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-1795DOI: 10.1109/IMTC.2006.328524ISBN: 0-7803-9360-0 (print)ISBN: 0-7803-9359-7 (print)OAI: oai:DiVA.org:hv-1795DiVA, id: diva2:242245
Conference
2006 IEEE Instrumentation and Measurement Technology Conference
Available from: 2009-10-07 Created: 2009-10-06 Last updated: 2015-03-17Bibliographically approved
In thesis
1. Simulation-based feedback control of welding processes
Open this publication in new window or tab >>Simulation-based feedback control of welding processes
2008 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Fusion welding for joining of metals is an important manufacturing process widely used in industry, and very appreciated for its usefulness. This thesis presents a strategy dealing with the problem of designing feedback control for robotised welding. The idea is to use off-line programming where computer aided robotics for weld sequences is integrated with finite element modelling for simulations and analyses of weld processes. By this approach the design, evaluations, trials and visualisation can be made “off-line”, beside or prior to continuous production. The focus is to reduce the amount of manpower and need for physical experiments. Focuses on the results are to ensure a high quality weld with limited residual stress and deformation. Different models for two types of austenitic steels and two types of weld sources has been calibrated and validated to form a basis for this strategy. Suggestions for systematic model calibration methods have been proposed including global and local optimisation methods. Experimental work has been performed to support and verify the simulation results and the usefulness of the method. The simulation based strategy has been evaluated and proven to work successfully in two different types of applications. The method is not independent of physical experiments since it is based on models that have to be calibrated, but the experiments needed are assumed to be carried out in a simple and cost efficient way. The thesis suggests how these experiments can be performed. The use of all these technologies is assumed to form an efficient tool for the welding engineer in order to obtain high weld quality in robotised welding. The research presented indicates that the methods work well in real situations and that further work for more robust industrialisation will be beneficial for the welding community.

Place, publisher, year, edition, pages
Göteborg: Chalmers University of Technology, 2008. p. 109
Series
Technical report / Department of Signals and Systems, Automation Research Group, Chalmers University of Technology, ISSN 1403-266X ; 2008:013
Keywords
Finite element modelling, Heat transfer, Model order reduction, Sensors, Weld simulation Controller design
National Category
Control Engineering
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-2409 (URN)
Presentation
2008-10-03, C120, Gustava Melins gata 2, Trollhättan, 10:15 (English)
Opponent
Supervisors
Available from: 2010-04-29 Created: 2010-04-29 Last updated: 2016-02-09Bibliographically approved

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Sikström, FredrikEricsson, MikaelNylén, PerChristiansson, Anna-Karin

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