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US 2010/0133247 A1Published application
Monitoring of a welding process
AssigneeThe Regents of the University of Michigan
InventorsJyoti Mazumder, Seung Hwan Lee
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Abstract
A method of monitoring a welding process, comprising detecting a selected portion of a light spectrum of plasma plume of a fusion welding process with a photo detector, processing the detected portion of the spectrum, comparing the detected portion of the spectrum with an expected spectra to determine whether a weld is acceptable, providing a signal to a welder control, and adjusting the weld process based on the signal.
Claims20
A method of monitoring a welding process, comprising:
- detecting a selected portion of a light spectrum of plasma plume of a fusion welding process with a photo detector;
- processing the detected portion of the spectrum;
- comparing the detected portion of the spectrum with an expected spectra to determine whether a weld is acceptable;
- providing a signal to a welder control;
- and
- adjusting the weld process based on the signal.
3 more elements
A welding system comprising:
- a metal substrate;
- a welder, wherein at least one material is fused by a weld, wherein the weld creates a plasma plume emission;
- a welding controller;
- a monitoring system, wherein the monitor includes at least one optical sensor;
- a computing device, wherein the computing device is configured to calculate a ratio of materials in the plasma plume emission, and wherein the computing device measures and plots at least one spectral line intensity, at least one electron temperature and at least one ratio that is recorded;
- and
- a feedback loop, wherein the feedback loop provides the welder control and an operator with a weld quality result.
4 more elements
Dependencies are inferred from the claim text.