MAROKO133 Breaking ai: Vehicles can get improved crash protection with 3D-printed adaptive

📌 MAROKO133 Breaking ai: Vehicles can get improved crash protection with 3D-printe

Researchers have developed a new form of 3D-printed twisting metamaterial that could offer improved crash protection for vehicles. The material has a unique lattice shape that allows it to twist into itself to effectively protect against a range of impact types and severities. 

Developed by researchers from universities in Scotland and Italy, the material’s response to blows can be mechanically controlled, thereby altering its energy absorption.

The research team highlighted that the material can be fine-tuned to provide stiffer resistance to heavy collisions or softer cushioning for lighter impacts. 

Adaptive twisting metamaterials

“This study introduces adaptive twisting metamaterials as a new class of metamaterials that don’t require any complex electronics or hydraulics to adapt. Instead, they can adapt simply through mechanical control of rotation,” said Professor Shanmugam Kumar of the University of Glasgow’s James Watt School of Engineering.

“When we apply compression, the gyroid lattice translates it into twist, and by changing the boundary conditions, we can tune the energy absorption characteristics. These materials can adapt and change their own characteristics depending on the impact type and severity to mitigate effects.”

The research team believes that the material could find applications in both automotive and aerospace safety in the future, providing a single new class of material capable of adapting to different needs as required. It could also support the development of novel forms of energy harvesting by converting impacts into rotational kinetic energy.

Subclass of architected lattices

The protective materials used in most vehicles today are static, designed for specific impact scenarios and unable to adapt to varying conditions.
The materials are made from steel using additive manufacturing, a process better known as 3D printing. The process gives the team fine-grained control over the material’s architecture, allowing them to weave a complex, highly porous shape known as a gyroid lattice throughout it, according to a press release.

Published in Advanced Materials, the research’s twisting metamaterials are a subclass of architected lattices whose mechanics are captured by micropolar elasticity.

Derived from twisting operations on primitive lattices, these structures exhibit geometry-induced torsional actuation and nonlinear responses, enabling adaptive crashworthiness, as per the study.

Multiscale predictive framework

“A multiscale predictive framework—combining Cosserat continuum mechanics, finite element modeling, and experiments—demonstrates its viability. Twisting sheet-based gyroid structures (10% relative density) are additively manufactured in FE7131 steel and tested under quasi-static and dynamic compression with varied torsional constraints, revealing adaptive energy absorption,” said researchers in the study.

The research team pointed out that mapping the material’s performance onto an Ashby chart highlights twisting metamaterials as a promising class of mechanically adaptive, crashworthy materials for advanced protection systems in automotive, rail, aerospace, and defense applications.

Researchers stressed that when the material is compressed by an external force, it twists in a corkscrew-like motion, absorbing the impact energy. In laboratory experiments, the team tested three versions of the material to assess their response to two types of loading: rapid impacts and slower, steadily increasing strains.

When the metamaterial was constrained from twisting at all in response to impacts, it provided maximum stiffness and absorbed the most energy – 15.36 joules of energy per gram of the material, according to the study. The research team underlined that their real-world tests are supported by a comprehensive theoretical and computational model, which can accurately predict the complex behavior, of twisting gyroid lattices under different strain rates.

For accurate numerical–experimental alignment, geometric imperfections introduced during additive manufacturing were quantified by integrating micro-CT reconstructions of the printed lattices, as per the press release.

🔗 Sumber: interestingengineering.com

📌 MAROKO133 Update ai: Bystanders Horrified by Slightly-Too-Honest AI Billboard Wa

San Francisco is plastered with billboards advertising AI tech, all in varying degrees of in-your-face dystopic. Even so, a new crop of them has managed to stand out from the pack by being shockingly upfront about the industry’s attitude toward regular humans.

“Our AI does your daughter’s homework. Reads her bedtime stories. Romances her. Deepfakes her,” reads a billboard asking you to visit a website called Replacement.AI. “Don’t worry, it’s totally legal [winking emoji].”

Visiting the website finds an even more overt message: huge text proclaiming that humans are “no longer necessary.”

“Stupid. Smelly. Squishy. It’s time for a machine solution,” it reads. “At Replacement.AI, we believe that building AI tools to fix the world’s most pressing challenges is an unprofitable waste of time.”

There’s also an actual quote by OpenAI CEO Sam Altman: “AI will probably most likely lead to the end of the world, but in the meantime, there’ll be great companies.”

Before you get your pitchforks out: it’s satire. The ad was highlighted in a now-viral tweet by makeup artist and influencer Matt Bernstein, before being reshared across the internet in places like Reddit, where the joke was lost on many users.

To be fair, we can’t blame them. The shtick is only slightly more outrageous than billboards for actual AI startups that have been plaguing Silicon Valley, like the “Stop Hiring Humans” campaign, which was obviously designed to stir up controversy, as are many others. Angering Luddites or generally just ticking you off is the name of the game. 

It’s a young industry, and apparently so are the people running its marketing. These AI startups may be competitors, but they’re all in on an internet-poisoned inside joke together, which the regular Joes that they’re ostensibly advertising to are not.

Enter Replacement.AI, which parodies the universal irreverence of the San Francisco AI bro, not to mention touching on how many tech CEOs have openly bragged about replacing their workers with AI (often unsuccessfully).

“We’re not going to bulls**t you about superhuman AI ’empowering workers,’” reads its website. “We’re explicitly building machines that are going to be better than you at every task.”

One of its pages is dedicated to the human artists threatened by AI.

“To the Artists replaced by AI – thank you,” it says, above a video message from one of the company’s purported representatives. The page also has a real quote from OpenAI that the company submitted to the UK government: “It would be impossible to train today’s leading AI models without using copyrighted materials.”

Clearly, a lot of effort went into pulling this off. And money: another user spotted several Replacement.AI billboards in Times Square. It also has a “CEO” named Dan, with his own Twitter profile and accompanying smug video message.

Overall, it’s a fun riposte at the people spearheading our ridiculous AI age, but with news like Amazon secretly planning to replace over half a million jobs at its warehouses with an army of robots, perhaps it won’t be just a joke for much longer.

Replacement.AI has a solution for that future: a form where you can “Beg for a place in our bunker.”

“Just record a video explaining why you agree that humans deserve replacing, and why you deserve a space,” it reads, “and we’ll maybe consider thinking about letting you in.”

More on AI: Meta Allows Deepfake That Irish Presidential Election Is Canceled to Go Viral

The post Bystanders Horrified by Slightly-Too-Honest AI Billboard appeared first on Futurism.

🔗 Sumber: futurism.com