UA Engineering Professor Uses Aerospace Materials To Build Endless Green Pipeline

December 2012, Vol. 67 No. 12

After testing this manufacturing method, Ehsani had a "eureka" moment when he realized that the finished pipe could be partially slid off the mandrel, and more pipe could be added to the section of pipe remaining on the mandrel. "I thought why don't we just slip this off of the mandrel and continue making this pipe?" Ehsani said. "Never stop."

Carbon fiber, resin and aerospace honeycomb are all very light materials that can be transported at a fraction of the cost of conventional prefabricated steel and concrete pipe, and Ehsani said he is looking for partners to develop an automated mobile unit to make the pipes onsite.
"Imagine having a truck with a mandrel in the back," Ehsani said. "You start making the pipe on, say, a 20-foot mandrel, and pull off 18 feet so you have two feet left on the mandrel," he said. "Then you just move the truck forward and drop the pipe in the ground, and keep adding pipe."