What is the term used for the welded joint configuration that provides reinforcement?

The term used for the welded joint configuration that provides reinforcement is "Backing." In welding, backing is a technique that involves placing a material behind the weld joint to support the molten metal as it solidifies. This configuration allows for better penetration and a more robust weld joint, minimizing the risk of defects like undercut or lack of fusion.

Backing serves as a reinforcement because it ensures that the weld metal has adequate support, ultimately enhancing the overall strength of the welded assembly. It can be particularly important in applications where the structural integrity of the weld is critical. Backing is often used in groove welds, where it can help achieve the necessary thickness and strength.

While fillet, groove, and splice represent other important aspects of welded connections, they do not specifically refer to reinforcement in the same way that backing does. A fillet joint refers to a specific shape of the weld between two surfaces, a groove joint indicates a design that allows for welding from one or both sides, and a splice generally refers to the joining of two pieces of material end-to-end. None of these terms convey the support and reinforcement function that backing provides in a welded joint configuration. Thus, the proper terminology for a welded joint configuration that provides reinforcement in this context is "Backing."