Root Opening Considerations for Fillet Welds


There are two phenomena associated with the root gap, or root opening in official American Welding Society terminology, at the fillet weld root region that can cause undesirable weld performance. In this article, engineers and welding experts Steven Altstadt and Robert Warke discuss considerations—as well as the challenges and risks—associated with the fillet weld root region.

This article originally appeared in the May 2021 issue of Inspection Trends, the quarterly publication published by the American Welding Society (AWS) and geared specifically to materials inspection and testing professionals. The publication is sent to individuals and facilities certified by AWS, including all Certified Welding Inspectors. Learn more here.