High accuracy laser scanning and three-dimensional modeling are critical requirements of weld distortion research and ultimately to the management of weld distortion. The significance of these requirements is based on an on-going fabrication project designed to validate FEA predictions of weld distortions typical of large curved steel structures. As built 3D models of a series of 1,300 square foot test beams are measured using Coherent Laser Radar for the purpose of determining deformations caused by the thermal affects of welding, i.e.: bending, warping and buckling. This paper describes tools and techniques currently used to minimize the un-certainty of measurements and maintain accuracy during the processing of point clouds into surfaced models. Further techniques are defined for generating 3D parametric models from finite element analysis results, and utilizing these models for direct comparison to the as-built 3D modeled results.
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ASME 2005 Pressure Vessels and Piping Conference
July 17–21, 2005
Denver, Colorado, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4191-X
PROCEEDINGS PAPER
Metrology and Modeling Techniques Used to Compare Highly Accurate As-Built 3D Models to FEA Weld Distortion Predictions
Steven D. Hand,
Steven D. Hand
MAGLEV, Inc., McKeesport, PA
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James F. F. Clark
James F. F. Clark
MAGLEV, Inc., McKeesport, PA
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Steven D. Hand
MAGLEV, Inc., McKeesport, PA
James F. F. Clark
MAGLEV, Inc., McKeesport, PA
Paper No:
PVP2005-71632, pp. 881-887; 7 pages
Published Online:
July 29, 2008
Citation
Hand, SD, & Clark, JFF. "Metrology and Modeling Techniques Used to Compare Highly Accurate As-Built 3D Models to FEA Weld Distortion Predictions." Proceedings of the ASME 2005 Pressure Vessels and Piping Conference. Volume 6: Materials and Fabrication. Denver, Colorado, USA. July 17–21, 2005. pp. 881-887. ASME. https://doi.org/10.1115/PVP2005-71632
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