SwRI developed a UT method that produces guided waves both axially and circumferentially to detect cracks and corrosion on both outer and inner pipe diameters. This inspection technique can be used from the outer surface of the pipe while it is in operation. Laboratory results have shown that defects as small as a 10 percent wall loss can be detected. SwRI is fabricating the third generation of its highly successful EDAS system for high-performance, automated UT testing of reactor pressure vessels and other large structures. SwRI, in conjunction with Foster-Miller, Inc., and under funding from the U.S. Department of Transportation, is developing a UT inspection system to detect defects in catenary wire.
Catenary wire is hung above train tracks to supply electrical power to trains.
As a train travels at high speed, its pantograph causes wear, as well as oscillations that lead to fatigue in the wire, especially at the hanger clips. A prototype wheel probe has been developed and demonstrated, and a preliminary design for the data acquisition system has been developed. The airship, developed by SwRI for the Joint Information Operations Center, is 24 feet in diameter and 124 feet long, and is constructed from a thin, transparent plastic film inflated with helium. An internally mounted sun tracking solar array produces electricity to power the flight control and propulsion systems. The airship successfullyascended to a flight altitude of 72,000 feet.