Laser ultrasonics for non-destructive battery weld evaluation (LUNAR)

Purpose and goal:

This project aims to explore the feasibility of using laser ultrasound (LUS) as a non-destructive and efficient method for measuring the welded area of laser welds in bus bars for EV-battery production. LUS is expected to enhance inspection processes with an automated contactless process which reduces the reliance on manual labor and eliminates the operator variability, thereby helping quality personnel in their decision-making.

Expected results and effects:

The project is expected to confirm the applicability of LUS technology in this type of application, thereby improving the quality of welded joints, reducing wastage and increasing reliability in the production of electric vehicle batteries. LUS technology can provide faster and more accurate measurement, reducing the need for destructive testing methods and promoting sustainable production.

Approach and implementation:

The project consists of five work packages focusing on material selection, experimental LUS measurement, comparative analysis and implementation, in addition to project management and dissemination of results. The experiments will test different LUS settings and compare the results with existing methods to determine accuracy and efficiency.