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RESEARCH PAPERS

A Real-Time Calibrated Thermal Model for Closed-Loop Weld Bead Geometry Control

[+] Author and Article Information
B. E. Bates, D. E. Hardt

Laboratory for Manufacturing and Productivity, Massachusetts Institute of Technology, Cambridge, Mass. 02139

J. Dyn. Sys., Meas., Control 107(1), 25-33 (Mar 01, 1985) (9 pages) doi:10.1115/1.3140703 History: Received August 07, 1984; Online July 21, 2009

Abstract

A distributed source conduction model is presented as a means for prediction and control of weld width and depth. Model inputs of arc efficiency and distribution are continuously calibrated by on-line comparison of predicted topside temperatures to measured profiles, giving low errors in weld size prediction. The technique is intended for closed-loop control of MIG and TIG partial penetration welds from topside measurements.

Copyright © 1985 by ASME
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