It’s actually just jargon-ified. When pressing a piece of sheet metal into a die (concave form) with a punch (convex form) to stretch and compress the metal in

It’s actually just jargon-ified. When pressing a piece of sheet metal into a die (concave form) with a punch (convex form) to stretch and compress the metal into a deep shape (e.g., a cup, can, etc.), using ultrasound to induce some wiggles can reduce the chance of tearing, likely allowing for less material use and greater yield rates for a machining process. Basically, if you’re forming metal with high force, give it some high speed micro-wiggles and things will be better. This should feel pretty natural for folks who have tried to squeeze into skinny jeans after Thanksgiving.