World News – US – Scientists reveal how evil iron beetle can survive car crash


The Evil Battleship Beetle is tough, and not just by name New research reveals getting run over by a car isn’t even a near-death experience for this bug

The study, conducted by engineers at the University of California, Irvine (UCI) and Purdue University, found that the remarkable durability of the Battleship Devil Beetle is due to two adaptations in the form of a armor in its exoskeleton that evolved over millions of years

These are side supports, which act as side walls and prevent the beetle from being squeezed, as well as a ‘medial suture’, which is a permanent closure of parts of the exoskeleton called elytra

In flying beetles, the elytra protect the wings and can open to allow flight But the evil armored beetle has no wings Instead, the elytra and connective suture help distribute the force applied more evenly throughout her body

A team led by UCI Professor David Kisailus first tested the limits of the beetle exoskeleton and examined the various structural components by examining CT scans

Using compressive steel plates, the research team discovered that the battleship evil beetle can take an applied force of about 150 newtons – a load of at least 39,000 times its body weight – before the exoskeleton starts to fracture

A car tire would apply a force of around 100 newtons if it ran over the beetle on a land surface, researchers believe Other land beetles the team tested couldn’t withstand even half of the force that an evil battleship can withstand

Professor Kisailus told the BBC’s Today program: « First of all, the name ‘evil’ gives you visions of horror, right? And « ironclad » makes you think it must be incredibly sturdy But if you looked at it you wouldn’t necessarily be able to discern it easily in the field as it actually looks like a small stone

« And I think that’s probably part of its survival mechanism – because a bird, rodent or lizard wouldn’t want to pick it up and eat a stone But they would be in a real battle

« It’s not that the beetle is fighting, it’s just that it’s so hard and sturdy that it would just stand there and take it »

Asked about its resilience, Professor Kisailus said: “If you look at it from the side it looks like a small tank.After we ran it over with a car, we did some proper mechanical testing and smashed it in one of our dynamic mechanical test devices »

« This beetle that is adapted to life on earth, and whose two halves of its flying structures are now permanently sewn together by a puzzle-like architecture that we call the medial suture »

Asked how this arrangement could be used to adapt human technology, Professor Kisailus gave the example of the joints between components inside an airplane, which must be tightly linked, but are also strong enough to withstand various forces (toughness)

He said, “We were like, ‘Oh, let’s make an imitation of the puzzle-like structure of the beetle and join a metal – a piece of aluminum – with a composite, and shoot it and compare the force. and the resistance to what you would see on an airplane, and what we found was that the strength of the scarab suture – the mimic we did – was about the same resistance as the attachment of the ‘plane, but 100% more resistant « 

David Restrepo, assistant professor at the University of Texas at San Antonio who worked on this project as a postdoctoral researcher, explained the concept. He said: “An active engineering challenge is to bring together different materials without limit their ability to support loads The Armored Devil Beetle has strategies to work around these limitations « 

Scientists have said that in aircraft turbine engines, metals and composite materials are joined together with mechanical fasteners that can add weight and introduce stress that can lead to fractures and corrosion

« These fasteners ultimately decrease system performance and need to be replaced every now and then. But the ironclad evil beetle’s interfacial sutures provide a robust and more predictable failure that could help resolve these issues, » Maryam said. Hosseini, who worked on this project as a doctoral student

UCI researchers constructed a carbon fiber composite tether that mimics the suture of an evil battleship beetle Purdue researchers have found through load testing that the binding is just as strong as a standard aerospace binding, but significantly more resistant

« This work shows that we may be able to move from strong, brittle materials to materials that can be both strong and strong by dissipating energy when they break This is what nature has allowed to the evil iron beetle, ”said Professor Pablo Zavattieri of Purdue University

The Battleship Evil Scarab can take an applied force of around 150 Newtons – a load of at least 39,000 times its body weight

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Battleship Devil Beetle

World News – US – Scientists Reveal How Devil Battleship Beetle Can Survive Being Run Over in Car


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