Proceedings ArticleDOI
Infrared Signature Analysis: Real Time Monitoring Of Manufacturing Processes
Edmund R. Bangs
- Vol. 0934, pp 111-119
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TLDR
In this article, a series of experiments using infrared thermography as the principal sensing mode are presented to show how artificial intelligence contained in infrared isotherm, contains vast critical process variables.Abstract:
The ability to monitor manufacturing processes in an adaptive control mode and perform an inspection in real time is of interest to fabricators in the pressure vessel, aerospace, automotive, nuclear and shipbuilding industries. Results of a series of experiments using infrared thermography as the principal sensing mode are presented to show how artificial intelligence contained in infrared isotherm, contains vast critical process variables. Image processing computer software development has demonstrated in a spot welding application how the process can be monitored and controlled in real time. The IR vision sensor program is now under way. Research thus far has focused on fusion welding, resistance spot welding and metal removal.read more
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Journal ArticleDOI
Infrared sensing techniques for penetration depth control of the submerged arc welding process
TL;DR: In this article, a rugged, low-cost, point infrared sensor was used to monitor changes in the plate surface temperatures occurring during the welding process to eliminate or mitigate defects that may form due to the process perturbations.
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Automatic defect identification using thermal image analysis for online weld quality monitoring
TL;DR: In this article, offset positioned thermal imaging of online TIG welding is demonstrated to be a feasible nondestructive monitoring technique for detecting porosities in the AA2219 welding, and spatio-temporal temperature distributions close to and in the vicinity of the weld pool can provide statistically distinct features in defect-free and defective weld regions, and thermal image-based assessment compares very favorably with post-weld radiography assessment for significant defect occurrence.
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A sensing system for weld process control
TL;DR: In this paper, a numerical model of the heat transfer during autogenous arc welding was used to estimate the net heat exchange between a weldment surface and a point infrared detector as a function of sensor position about the welding arc.
Thermography for Online Detection of Incomplete Penetration and Penetration Depth Estimation
Baldev Raj,Indira Gandhi +1 more
TL;DR: In this article, the authors highlight the application of thermal imaging sensors for detection of defects such as lack of penetration and estimation of depth of penetration during Tungsten Inert Gas (TIG) welding.
Journal ArticleDOI
Survey of infrared sensing techniques for welding process monitoring and control
TL;DR: In this article, a variety of IR sensors have been investigated for use in monitoring and controlling weld bead width, penetration depth, seam tracking and cooling rate during arc welding, and nugget size and cooling ratio during resistance welding.
References
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ReportDOI
Temperature distributions in electron beam welding cavities
TL;DR: In this paper, the surface temperatures in electron beam welding cavities in stainless steel 304 and aluminum 1100, 2024, and 6061 were measured with a narrow band infrared radiation pyrometer.