Let's get Locks and Chains made out of this ASAP!

[glenmorenee]

Geekologie

geekologie.com

 

[onlineaddy]

I don't get it: the "angle grinder attack" video shows the material being cut into.

 

[christob]

I believe the new material is housed inside the steel box - the grinder cuts through the box's outer steel plate, but can go no further into the interior, I believe is what the video means to show. (Though they don't then reveal the contents of that steel box...)

 

[Nova Haibike]

It may not be cuttable with an angle grinder, but being a "cellular aluminum structure wrapped around ceramic spheres"" I will bet it can be cut with a torch.

 

[antboy]

I don't get it: the "angle grinder attack" video shows the material being cut into.

To a certain extent, but after the initial "bite", you're not seeing the cut go much deeper so much as the blade shrinking before your eyes.

Look at the difference in diameter on the blade between the beginning and end. It's down by almost 50%, and well over 50% in the original paper.

Non-cuttable material created through local resonance and strain rate effects - Scientific Reports

We have created a new architected material, which is both highly deformable and ultra‐resistant to dynamic point loads. The bio-inspired metallic cellular structure (with an internal grid of large ceramic segments) is non-cuttable by an angle grinder and a power drill, and it has only 15% steel...

www.nature.com

I've only skimmed the actual write-up, but I'm not sure if the material would work at the standard 10-18 mm diameter of most u-locks, as it does seem to manage to get at least partial penetration, creating a weak point.

Still, pretty interesting stuff. Maybe something thicker than a Fahgettaboudit, but not as thick as the Altor SAF would work...

(PROTEUS?)

 

[christob]

That Altor makes me laugh; it is so ridiculously monstrous. Where exactly do you park & lock the bike that is so bad an area, you need to buy this and leave it at the rack? (Assuming the thief doesn't cut the rack and steal the locked lock while you're not using it... leaving you stranded when you arrive next time...)