Acoustic emissions testing of air storage vessels at APTU is cost-savings effort
In an effort to save money and have less facility down-time, a new technique was used at the AEDC Aerodynamic and Propulsion Test Unit (APTU) at Arnold Air Force Base to inspect high pressure air storage vessels. As part of the inspection, an outside contractor was hired and members of its rope crew set sensors on the bottles at APTU to detect flaws. (U.S. Air Force photo/Rick Goodfriend)

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Photo by: Rick Goodfriend |  VIRIN: 170927-F-RS654-003.JPG