Welding quality prediction model

A solution based on AI potential to predict weld quality. Based on a robotic arc welding cell, data are captured from different sources: welding equipment, external sensor systems and robots. This allows monitoring the welding process variables with the highest impact on joint quality. 

The critical points used to evaluate the quality of welded joints are mainly geometrical parameters. They must comply with the regulations applicable to each type of joint. To achieve this, an inspection system based on laser profilometry is in place, making it possible to obtain profiles of the joint surface and then processing these signals to obtain the geometry results.

These two data sources are synchronised so that a single record from each data source is allocated to each instant. As a result, artificial intelligence models trained with historical data of welds can be built, allowing predictions of the joint geometry before it is verified by an inspection system, or without it. 

Target/Challenge

The biggest challenge is to feed the model with the correct expert knowledge. In other words, careful measurements of the geometrical parameters to be predicted need to be taken and synchronised with the corresponding process data.

Result

Having a validated AI model means the process can be altered to reduce the number of defects, cutting production costs per valid weld, thus increasing the company's competitiveness.

Sectors

Energy storage

Automotive sector

Components and capital goods

Digitalisation

Machine-Tool