| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Advanced Joining Technologies for Automotive Lightweight Structures
|
| Presentation Title |
Friction Stir Lap Welding of 3T Al Sheets in a Robotic Platform |
| Author(s) |
Piyush Upadhyay, Hrishikesh Das, Shivakant Shukla |
| On-Site Speaker (Planned) |
Piyush Upadhyay |
| Abstract Scope |
Replacing the steel passenger cage with an appropriately designed stamped Al assembly within the existing steel body construction is a viable approach toward automotive light-weighting. A cost-effective joining method that can meet and exceed the crash requirement for three sheet joint configuration is needed for this goal. PNNL has been developing three sheet dissimilar Al joints using Friction stir welding in coupon and near-component level. Process developments were first done on a stiff Gantry machine and efforts are underway to transfer the process to a robotic platform. Thus far, viable three sheet FSLW joints have been demonstrated up to a welding speed of 1m/min in FSW robot in linear and curved welding paths. Lap shear, T peel, U peel tests, and joint characterization will be presented. Challenges associated with robot FSW and solution approaches will also be discussed. |