![]() ![]() Results from the NDE examinations reveal some shallow porosity but no major defects in the as-manufactured material. MSFC's Nondestructive Evaluation (NDE) Team performed radiographic, ultrasonic, computed tomographic, and fluorescent penetrant examinations of the duct. DMLS technology was pursued as a manufacturing alternative to traditional techniques, which used off nominal practices to manufacture the gas generator duct's 180 degree turn geometry. The J- 2 X program at NASA's Marshall Space Flight Center ( MSFC) procured a direct metal laser sintered (DMLS) gas generator discharge duct from Pratt & Whitney Rocketdyne and Morris Technologies for a test program that would evaluate the material properties and durability of the duct in an engine-like environment. Nondestructive Evaluation of the J- 2 X Direct Metal Laser Sintered Gas Generator Discharge DuctĮsther, Elizabeth A.
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