1983 · 60 citations · 0 references
EngineeringManufacturing EngineeringMechanical EngineeringHeat TransferInstrumentationSensorsArc WeldingTemperature MeasurementTemperature SensorsThermal SensorsWeldingWelding ProcessesClosed-loop Feedback SystemsContinuous Process ControlInfrared ThermographyIsothermsSurface TemperatureSurface Temperature AnalysisThermographyWelding Automation
This paper was presented at the Annual AWS Convention, Philadelphia, Pa., Apr. 1983. The Authors present experimental results that could aid in the development of a closed-loop feedback system capable of correcting for perturbations that arise during automatic arc-welding. Specific weld faults were intentionally introduced into an arc-welding process, and the resulting surface isotherms were observed with a scanning infra-red camera for both stationary and moving arcs, Each fault produced a recognisably different distribution of the surface temperature. The results are presented and discussed in some detail, and it is concluded that infra-red thermography appears to be a suitable sensor for incorporation into a closed-loop feedback system for continuous process and quality controlled welding.