About this Abstract |
Meeting |
Advances in Welding and Additive Manufacturing Research 2022
|
Symposium
|
Advances in Welding and Additive Manufacturing Research 2022
|
Presentation Title |
Towards Ultrasound Driven, In-Process, GTA Welding Inspection and Process Control |
Author(s) |
Nina Elizabeth Sweeney, Charles Norman MacLeod, Simon Parke, Stephen Gareth Pierce |
On-Site Speaker (Planned) |
Nina Elizabeth Sweeney |
Abstract Scope |
Traditionally, weld inspection occurs as a final step in the manufacturing process and only after a sufficient time period has lapsed in which to detect delayed defects. Therefore, defects introduced early in multi-pass welding remain buried until the weld is complete which can greatly complicate the re-work procedure. This limits productivity, throughput and increases re-work times, material wastage and the associated costs as well as delaying early correction of improper process parameters. In recent years, there have been increasing industrial and economic drivers towards employing innovative in-process inspection and control strategies which aim to combine quality control at the point of manufacture. These seek to ensure the earliest possible detection of detects, enabling quicker correction and repair, reducing the above problems. Here, the feasibility of using phased array ultrasonic compression and shear waves to interrogate and analyse the molten weld pool of a multi-pass gas tungsten arc welding (GTAW) process in real-time is explored. Through processing and analysis of the received ultrasonic waves, this technique is shown to provide data of sufficient quality in determining real-time weld pool size that can be used to inform and drive a closed-loop control system. |
Proceedings Inclusion? |
Undecided |