Robotic Extrusion: 6-axis 3D printing
behance.net
behance.net
As far as I could tell from the article, they haven't yet done anything with the corrugated ABS filaments other than string them up around the room where they exhibit the robotic printer/extruder. I imagine the next step is to perform tensile strength tests and flexing strength tests against an ABS monofilament with a round cross section of equal area to the corrugated multifilament.
I will say that putting a print head on a robotic arm could lead to more industrialized FDM machines though.
Note that this is meant primarily as a design tool, not as a production method. Think of it as a 3-D sketching tool for architects/designers...
"In this project what I am aiming to figure out is the way of integrating digital fabrication into designing as well as producing. It is more like the revival of craftsmanship in digital age." (From "About Project")
http://www.fluxintegration.com/pages/flx-arm
https://www.kickstarter.com/projects/535786699/flxarm-low-co...