
Additive Manufacturing (Page 10)
February 16, 2023
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...
DetailsJanuary 26, 2023
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...
DetailsJanuary 9, 2023
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...
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