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UA engineering professor uses aerospace materials to build endless pipeline
Date:8/17/2012

TUCSON, Ariz. (August 17, 2012) -- Mo Ehsani, Professor Emeritus of Civil Engineering at the University of Arizona, has designed a new, lightweight underground pipe he says could transform the pipeline construction industry.

Instead of conventional concrete or steel, Ehsani's new pipe consists of a central layer of lightweight plastic honeycomb, similar to that used in the aerospace industry, sandwiched between layers of resin-saturated carbon fiber fabric.

In combination, these materials are as strong, or stronger, than conventional steel and concrete pipes, which are time-consuming and expensive to manufacture and transport.

Concrete and steel pipes are built in short sections to fit on standard 18-wheel trucks, but Ehsani's new pipe can be built onsite as a single section of virtually infinite length, hence the product name InfinitPipe.

The heavy industrial manufacturing processes, long-distance trucking, and leak-prone joints used in steel and concrete pipe construction exact a heavy toll on the environment, not to mention bottom line, which is why Ehsani's company, QuakeWrap, is marketing InfinitPipe as the world's first "green" pipe.

"There are really two aspects to this invention," Ehsani said. "One is this new type of lightweight honeycomb pipe. Second is our ability to give clients an endless or infinite pipe, without a joint. That is a big, big breakthrough in the pipeline industry that has implications for natural gas, oil, water, and sewer pipes."

A literally infinite pipe is, of course, not feasible, but Ehsani's method of manufacturing could create extremely long sections of joint-free pipe. "We could make a section a mile long," he said. "Of course, every thousand feet or so, you'd need an expansion joint so the pipe can breathe, but this would certainly not be the same concern we have today, where we have to put a joint every 20 feet."

The secret of producing virtually endless pipe s
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Contact: Pete Brown
pnb@email.arizona.edu
520-621-3754
University of Arizona College of Engineering
Source:Eurekalert  

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