Additive Manufacturing (Page 7)

The primary process today for robotic arc directed energy deposition (DED), used for large-scale additive manufacturing builds, is gas metal arc welding. However, two other processes, plasma-arc (PA) and gas tungsten arc (GTA) welding, have been recently studied at EWI and shown to offer greater control over power and material inputs during a build. EWI...

With advancements in additive manufacturing, interest has grown in functionally graded materials (FGMs) as the gradual variations in their composition can provide locally tailored properties. However, they are plagued by a familiar challenge in the world of multi-material solutions – effective joining. The broad range of composition in FGMs can lead to several problems, most...

More than a dozen years ago, EWI worked on an innovative concept that applied ultrasonic welding to successive layers of metal tape to build up a solid, three-dimensional shape. This additive technique had the ability to join different metals together and enabled in-process machining of the part. Ultrasonic additive manufacturing (UAM) was patented, and in...