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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Microwave nondestructive testing technology for inspecting nonmetallic materials and composites and detecting defects beyond air gaps by reflection
X ray TV image enlargement system to perform inspections and failure analysis on electronic parts
Portable fiber optics sensing device which detects surface irregularities in a specific tube flare, permits discrete dimensional measurements to be taken, scanned and read out with only one setup. Capabilities of the instrument can be expanded to include surface inspection of various kinds of tube flares.
Delta technique for ultrasonic weld inspection, noting ability to detect randomly oriented weld defects
Remote disassembly and inspection methods for evaluating NRX-AG reactor components performance
By building a floating isolator box of cork around the test object and using a low frequency transducer, automated conventional C scan equipment is adapted to inspect the object ultrasonically. Vibrations are isolated and reflected noise is reduced.
Hybrid microcircuit quality standards, inspection criteria, and reliability screening
Remote visual inspection system using television fiberscope
Feasibility of automatic visual microcircuit inspection based on optical spatial filtering and electronic signal processing
Ultrasonic scanning system developed for in place inspection of brazed tube joints
Properties, evaluation, inspection, and repair of alloys and silicide coatings for space shuttles
Porous material thoroughly wetted with alcohol shows persistent wet line or area at locations of cracks or porosity. Inspection is qualitative and repeatable, but is used quantitatively with select samples to grade density variations in graphite blocks. Photography is employed to achieve permanent record of results.
Technique produces high resolution cross-sectional radiographs with close interplane spacing for inspecting multilayer boards to be used in providing circuitry routing and module structural support.
Specialized tool enables visual inspection of interior bore surfaces of pipe lines having sharp bends and blind runs. Adjustable, hinged optical head permits viewing of bore surfaces at angles from 0 deg to 115 deg to the principal axis of the sight tube.
Apparatus for semiautomatic inspection of microfilmed documents for density, resolution, size, and position
Fatigue crack length relationship with aircraft inspection intervals and structural reinforcement, high strength materials, and aircraft usage effects
Holographic microscopy technique fundamentals and electrically activated integrated circuit changes inspection
Post test inspection of Brayton Rotating Unit for closed Brayton cycle electric power conversion system for long space missions