Abstract
The in situ strain field measurement during a tungsten inert gas welding of 1 mm-thick stainless steel butt joint was evaluated by three-dimensional digital image correlation (DIC). The experiments were designed to measure the strain evolution in the vicinity of the weld pool from the backside of the steel plate to prevent intense welding arc from deteriorating digital image quality and also provided a way to measure transient strain field during welding, especially for welding of thin materials. The in situ strain field under different welding parameters in the vicinity of weld was analyzed. The strain evolution around 5 mm away from the weld center line could be measured.
| Original language | English |
|---|---|
| Pages (from-to) | 307-314 |
| Number of pages | 8 |
| Journal | Welding in the World |
| Volume | 61 |
| Issue number | 2 |
| DOIs | |
| State | Published - Mar 1 2017 |
Funding
This research was sponsored by the US Department of Energy, Office of Nuclear Energy, for the Light Water Reactor Sustainability Research and Development Effort, under a prime contract with Oak Ridge National Laboratory (ORNL). ORNL is managed by UT-Battelle, LLC for the US Department of Energy under Contract DE-AC05-00OR22725. This research was also supported in part by the National Natural Science Foundation of China under Grant No. 51575401 and the National Natural Science Foundation of Zhejiang under Grant No. LY16E050007. The authors would like to thank Dr. Wei Zhang at the Ohio State University for the fruitful discussion. The authors also appreciated Mr. David Alan Frederick, Dr. Jian Chen, Dr. Yanli Wang, and Dongxiao Qiao for their support on the welding setup and sample preparation.
Keywords
- Austenitic stainless steel
- Computation
- Imaging
- Strain
- TIG welding