Steel beams are pretty uniformly strong , but they ’re all footrace of the pulverization , literally . If you start3D - printing usage beams for the exact function they ’re specify to servethough , you ’ve got a regular space - geezerhood material on your hands . It ’s lighter than steel and orders of magnitude stronger .
The process , break byYong Mao of the University of Nottingham , UK and colleagues , is n’t just the product of one instauration , but rather a whole bunch of them wrapped up into one megabucks . First , you get going out withF a hollow beam and you prove it with the load it take to bear . When it inevitably fails , you use some sophisticated computer software to analyze that fall guy and 3D print an internal fractal structure to provide support , kind of like what ’s inside your bones . Then lather , rinsing , and repeat . With each iteration of ever - small fractal innards , the light beam can gain military posture by the order of order of magnitude , with practically negligible weight gain . Third generation beams , about as far as we can hope to go with current tech , are 10,000 times stronger than steel .
There is one big limit to how strong you’re able to get with this stuff however , and it all depends on printer fidelity . Since these sorts of beams are specifically design , there ’s not much extra livelihood to gestate your load , so if the mesh is n’t thoroughgoing , you could be in difficulty . As 3D printer get better however , imperfections wo n’t be a job on the declamatory scale , and more and more iteration will be possible , make for social structure that are both incredibly strong and incredibly light . Now if only they could figure out how to 3D print some young bones for us . [ Physics World ]

three-D printingArchitecture
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