1. Changchun University of Technology,College of Mechanical and Electrical Engineering,Changchun,China
2. Guilin University of Electronic Technology,Guangxi Key Laboratory of Trusted Software,Guilin,China
3. Changchun University of Technology,College of Applied Technology,Changchun,China
4. AW Tooling Die Manufacturing CO., LTD.,Welding Development Department,Changchun,China