ORNL Origami Creates Large Foldable Structures

According to ORNL, the process starts with fabric,

“Such as nylon, glass fiber or resin-infused composite fibers, followed by an integration or bonding layer such as thermoplastic polyurethane for compatibility and adhesion. The reinforcing layer is then applied using deposited composite materials, including thermoplastic carbon-fiber acrylonitrile butadiene styrene for lightweight structural performance or thermoset formulations such as styrene-based or epoxy-based resins for enhanced stiffness, geometry control and durability….The materials bond at the molecular level, forming a strong connection between the grid and the outer layer.”

I once tried to print TPU onto a T-shirt, but this did not work. But I did not know that I was so close to greatness. ORNL thinks this can produce large objects and could reduce manufacturing time by 95% and costs by 90% compared to traditional manufacturing methods. Oak Ridge has patented the process and wants to license out this innovation.

Guzorek goes on to say that,

“Our goal is to make this innovation scalable so manufacturers across industries can harness its potential. By broadening access to mold-free hybrid composites, we’re empowering manufacturers to explore new design possibilities and unlock entirely new applications for this transformative technology.”

Integrated fold geometries and structural reinforcement patterns enable this origami-inspired composite to transition from a flat panel into a three-dimensional form. Image courtesy of Andrew Sproles/ORNL, U.S. Dept. of Energy

As much as I’d like to think that ORNL is making 3D printable homeless shelters, it’s probably something else that’s going to be the output here. One obvious application is to make flexible insulation structures for rockets and aviation applications. Previous Space Shuttle heat blankets, enhanced with ceramics (Fibrous Insulated blankets), were used in fire protection and aviation. These blankets protected the Shuttle from heat and replaced the tiles that malfunctioned, causing the Columbia disaster. On some hypersonics, a flexible, reusable surface insulation layer made of Nomex is used along with lightweight phenolic ablation materials to protect the craft from intense heat. TPS (thermal protection systems) are to be a key part of future extended space missions. Research into nanodoped ceramic-polymer composites and advanced resins is also expanding rapidly. Current work in Multi-Layer Insulation (MLI) could really benefit from this.

Foldable drones may seem fanciful, but this is another possibility. There’s an SBIR out for Juggerbot, which makes structures using material extrusion and then enhances them by jetting thermosets onto them. This is a super exciting way to make extremely lightweight structures. No more rivets, no more internal structures and skin, just one strong skin. Another possibility is to make IR-blocking structures. Kastinger, for example, makes HT4 a fabric that blocks IR cameras from seeing you or your vehicle. With drones all over the place, having large structures being made quickly to keep you from being seen seems like a great idea.

Now imagine printing a large structure flat. We love flat structures because they’re fast and cheap to make. And then, with little print time, you fold it into a drone body or a wing shape. That would be super nice. That would allow you to make super-cheap structures super quickly. With our drone event upcoming, I’m thinking quite a lot about drones, so maybe you could do other things with this.

Temporary structures are a considerable business and could be another target for this. Such structures could also find applications in offshore energy, wind power, and other large-scale infrastructure projects. I don’t know if we should 3D print room dividers or something like this, but this is one way to do it. Apart from this invention, more people should be thinking along these lines. With similar methods, you could make very large structures at very low cost. Years ago, Nervous System showed that by printing on pre-stretched fabric, you can effectively program a shape to emerge when the fabric’s tension is released. Coupling this with the ORNL approach could let you print a table faster, and then it can self-assemble. Combining this approach with DefeXtiles, you could even add a woven layer using under-extrusion to reinforce your print.