Welding assistance device, welding assistance method, and program

A welding assistance method comprising:

• a step of acquiring welding data including a plurality of parameters indicating a welding state;
• a step of estimating a type of a welding defect occurring at a welding portion based on a defect estimation model using the welding data as an explanatory variable and using the type of the welding defect as an objective variable;
• and
• a step of specifying a factor parameter contributing to the occurrence of the welding defect based on the welding data and the estimated type of the welding defect and generating analysis data indicating a correlation between a magnitude of a value of the specified factor parameter and a magnitude of a contribution degree to the welding defect.

A non-transitory computer-readable medium that records a program causing a welding assistance device to perform:

• a step of acquiring welding data including a plurality of parameters indicating a welding state;
• a step of estimating a type of a welding defect occurring at a welding portion based on a defect estimation model using the welding data as an explanatory variable and using the type of the welding defect as an objective variable;
• and
• a step of specifying a factor parameter contributing to the occurrence of the welding defect based on the welding data and the estimated type of the welding defect and generating analysis data indicating a correlation between a magnitude of a value of the specified factor parameter and a magnitude of a contribution degree to the welding defect.