Researchers at the U.S. Naval Information Warfare Center in San Diego are presently tasked with leveraging next-generation technologies such as additive manufacturing to increase sustainment capabilities in support of the modern warfighter. In this presentation, the authors will outline three specific applications of the MELD process, including the 3D printing of long-lead raw casting replacements, the repair of legacy components currently without a repair strategy and a Navy-patented approach for extending the life of legacy components from three to 20 years by depositing a sacrificial anodic material directly onto a targeted area of the existing component’s geometry. The MELD process (also known as additive friction stir deposition) is a solid-state metal additive technology that utilizes a non-consumable rotating tool to plastically deform solid, wrought bar feedstock as means to enable both additive manufacturing, joining and repair of large metal components. The details of this effort including motivation, mechanical performance and next steps will be discussed.
- Understand how additive technologies can be used to shorten lead times of raw form casting and forgings.
- Have a better understanding for how advanced metal deposition systems can be used to extend the life of existing products.
- Understand how to create better performance by combining metals via a solid-state process.