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Nondestructive evaluation methods used in Space Shuttle structural inspections

Standard nondestructive (NDE) methods, borescope, x ray, dye penetrant, ultrasonic, and eddy current are used to detect flaws generated from the extreme environments that the Space Shuttles encounter. Each of the four space shuttles, Columbia, Discovery, Atlantis, and Endeavour, are required to have a structural inspection performed at the Rockwell Space System Division, Palmdale facility. This paper describes the NDE methods used at Palmdale during the orbiter maintenance down period (OMDP) of the Space Shuttle Atlantis.