With regular ultrasonic testing, high-frequency sound waves are passed through solid materials to detect cracks, voids and other inconsistencies as well as measure thickness and analyze material properties. PAUT takes the technology one step further, using a detection unit and a probe to steer, focus and scan beams, and generate images for analysis.<\/p>\n
A typical PAUT device consists of a detection unit and a probe, which are used to generate images for analysis.<\/p>\n
\u201cSimply put, PAUT is to traditional ultrasonic testing what digital is to traditional film photography,\u201d said Scott Steube, project manager, Water. \u201cPAUT can reveal material anomalies such as size, length and location hidden inside a structure or weld<\/a> that are classified as defects.\u201d<\/p>\n Several AECOM-led projects in the United States have benefitted from the use of PAUT, including the private suites at TCF Bank Stadium at the University of Minnesota in Minneapolis, Minnesota, and SC Johnson Project Honor in Racine, Wisconsin, as well as the O\u2019Hare International Airport Fa\u00e7ade and Circulation Enhancement project in Chicago, Illinois.<\/p>\n Projects involving PAUT are expected to increase as the technology gains interest from industry groups such as the Electric Power Research Institute and the American Society of Mechanical Engineers.<\/p>\n