| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XI
|
| Presentation Title |
Removing Rotational Variations from Shoulder Thermocouples in Friction Stir Welding |
| Author(s) |
Brandon Scott Taysom, Kenneth Ross, Woongjo Choi |
| On-Site Speaker (Planned) |
Brandon Scott Taysom |
| Abstract Scope |
Thick plate and colder temperature friction stir welding results in good post weld properties by welding at very low tool rotational speeds. At low speeds, large variations in the measured shoulder temperature occur which makes controlling temperature difficult. This paper describes a computationally light method to compensate for oscillating measured temperatures. Data is collected over the previous two revolutions and used to calculate a derivative and build a compensation table. In simulation, measured temperature variations are reduced by a factor of about ten with zero added delay. When implemented on a PLC in an actual weld showed dramatic reductions of measured oscillation at rotational speeds between 30 and 120 rpm. |
| Proceedings Inclusion? |
Planned: |