Non-destructive aluminum weld quality estimator

An aluminum welding system comprising:

• a welding machine configured to weld a workpiece with an aluminum nugget;
• a measurement device configured to electrically measure a plurality of attributes of the aluminum nugget during a welding process;
• and
• a processing device configured to generate and continuously output, during the welding process, a weld quality signal representing a real-time quality of an aluminum weld based at least in part on the attributes measured and control operation of the welding machine based at least in part on the weld quality signal continuously output during the welding process,
• wherein the processing device includes a dynamic neural network configured to update the real-time quality of the aluminum weld represented by the weld quality signal and wherein the real-time quality of the aluminum weld represented by the weld quality signal represents a real-time likelihood that the quality of the aluminum weld meets at least one predetermined criterion.