About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Joining Technologies for Automotive Lightweight Structures
|
Presentation Title |
A Novel Approach for In-process Monitoring of Dissimilar Ultrasonic Welds of Multi-strand Aluminum Wires and Copper Terminals Utilizing the Seebeck Effect |
Author(s) |
Andreas Gester, Toni Sprigode, Guntram Wagner |
On-Site Speaker (Planned) |
Andreas Gester |
Abstract Scope |
Industrial process monitoring during ultrasonic metal welding of automotive wires and terminals often encompasses sample-based destructive tensile testing as well as the surveillance of welding parameters. Monitoring of all joints down to lot size one and the avoidance of false-positives is not possible with these options, leading to large amounts of pseudo-rejects and undetected faulty welds. However, the increasing substitution of copper wires with light-weight aluminum in automotive wire harnesses, resulting in dissimilar joints of aluminum wires and copper terminals, enables monitoring of other physical properties. Current work focusses on a novel approach for utilizing the thermoelectric effect for process monitoring. In this paper the actual measurement setup is presented and a setup for industrial use is proposed. In order to quantify the correlation between thermoelectric properties, joint strength and the welding parameters previously used for process monitoring Pearson correlation coefficients were determined for all values. |
Proceedings Inclusion? |
Planned: |
Keywords |
Joining, Process Technology, |