Externally, the robot is pretty mundane. “It looks like a metal box, about the size of a large picnic cooler,” explained Thomas. The robot uses a number of techniques to test a bridge’s steel lattice core. One deploys sound waves to ferret out micro cracks, air pockets and splits. The grant will also help fund a smart phone app that excavators can use to create an underground map of wires, on the spot, before they dig.
More>>