Objective:
The goal of this project is to characterize inline coherent imaging technology (ICIT) for hybrid laser-arc welding applications. Shipbuilders need data to understand the monitoring performance, operating characteristics, benefits, and implementation requirements for these applications. The objectives include:
- Evaluating monitoring performance of five process variables: workpiece height, seam profile, keyhole depth, finished weld surface, and transverse profile of full penetration butt joints
- Evaluating discontinuity/defect detection and process monitoring capability using “quality scenario test” procedures that simulate unacceptable quality conditions (i.e. joint fit-up conditions and potential defects like porosity, lack of fusion, lack of penetration, undercut, underfill, etc)
- Using the quality scenario test procedures; determine measurement sensitivity, reproducibility, and repeatability
- Assessing performance for quality monitoring of pre-weld, in-weld, and post-weld conditions for shipbuilding applications
- Assessing implementation impact and requirements
Overview
Welding Technology
Project Team:
Ohio State University
GD NASSCO
HII-Newport News Shipbuilding
EWI
2020
NSRP ASE INVESTMENT: $149.5K