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Weld Data Collecting for Use in Welding Simulation and Digital Twins

Authors:
Martin Gredehall
Tobias Larsson

Keywords: welding; orbital welding; simulation; TIG; design

Abstract:
Today´s industry produces a lot of pipes; for cooling, chemicals and other purposes. The piping can be in a large variety of dimensions and materials, with stainless steel being a common choice due to its resistance to corrosion. Ships, submarines or powerplants, can have several kilometres of piping, with high demands and requirements on quality and safety. Over the lifetime of a pipe, maintenance or replacement may be necessary, often requiring welding to join sections. Due to economic considerations, much of the fabrication is conducted in workshops, necessitating precise tolerances and robust processes, but also causing problems when on-site installation is needed. This study aims to collect measurement data for subsequent use in welding simulations and the development of digital twins for expected final design. Tree pipes were welded with orbital TIG-welding and during the welding, temperature was measured with type-k thermocouples around the diameter of the pipe. Before and after the welding the length of the pipes was measured in four places. Test data collected includes temperature profiles and shrinkage during welding. The tests revealed longitudinal shrinkage in the weld zone ranging from 0.12% to 0.18% of the length of the pipe, with higher heat input resulting in increased longitudinal shrinkage. In the future, this measurement data can be used for verification purposes in the development of digital twin models by comparing actual welding outcomes with simulation results, aiding the prediction and resolution of geometric tolerance challenges during production, and installation. This paper proposes an approach to collect data for future simulation and prediction of deformation and shrinkage in piping systems during welding using digital twins.

Pages: 1 to 6

Copyright: Copyright (c) IARIA, 2024

Publication date: September 29, 2024

Published in: conference

ISSN: 2308-4537

ISBN: 978-1-68558-197-8

Location: Venice, Italy

Dates: from September 29, 2024 to October 3, 2024