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Old Posted Feb 8, 2018, 12:20 AM
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New Process Could Make Wood As Strong As Titanium Alloys But Lighter And Cheaper

New process could make wood as strong as titanium alloys but lighter and cheaper


February 7, 2018

Read More: https://m.techxplore.com/news/2018-0...s-lighter.html

Quote:
Engineers at the University of Maryland, College Park (UMD) have found a way to make wood more than 10 times times stronger and tougher than before, creating a natural substance that is stronger than many titanium alloys.

- "This new way to treat wood makes it 12 times stronger than natural wood and 10 times tougher," said Liangbing Hu of UMD's A. James Clark School of Engineering and the leader of the team that did the research, to be published on February 8, 2018 in the journal Nature. "This could be a competitor to steel or even titanium alloys, it is so strong and durable. It's also comparable to carbon fiber, but much less expensive." Hu is an associate professor of materials science and engineering and a member of the Maryland Energy Innovation Institute.

- "It is both strong and tough, which is a combination not usually found in nature," said Teng Li, the co-leader of the team and Samuel P. Langley Associate Professor of mechanical engineering at UMD's Clark School. His team measured the dense wood's mechanical properties. "It is as strong as steel, but six times lighter. It takes 10 times more energy to fracture than natural wood. It can even be bent and molded at the beginning of the process." The team also tested the new wood material and natural wood by shooting bullet-like projectiles at it.

- "The paper provides a highly promising route to the design of lightweight, high performance structural materials, with tremendous potential for a broad range of applications where high strength, large toughness and superior ballistic resistance are desired, " said Huajian Gao, a professor at Brown University who was not involved in the study. "It is particularly exciting to note that the method is versatile for various species of wood and fairly easy to implement." "This kind of wood could be used in cars, airplanes, buildings - any application where steel is used," Hu said.

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Old Posted Feb 27, 2018, 4:20 AM
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So they made 550MPa/80ksi wood.
Nice.
Shame that the process requires pressing for 1 day. I'd imagine that they will be doing further research to reduce that.
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