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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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Method measures the area of the bonded zone of a compression weld by observing the electrical resistance of the weld zone while the load changes from full compression until the joint ruptures under tension. The ratio of bonding force to maximum tensile load varies considerably.
Printed circuit board design allows for thermal stressing of the soldered joints during many thermal cycles. Components' leads should be cleaned, tinned, and freed of particles that prevent solder adherence, have a thin conformal coating, and have an air space between the coating and the body of the component.
Design-oriented approach for predicting thermal resistance of bolted lap joint including bibliography
Balanced stresses in post-yielded multimaterial structural joints
Vacuum jacketed components on launch umbilical tower service arms at Launch Complex 39 - low heat cryogenic rotary joint
Vacuum jacketed components on launch umbilical tower service arms at Launch Complex 39 - bayonet joints in cryogenic propellant and vent lines
Determination of weld porosity in Saturn joint configuration
Magnetic force upset welding of dissimilar thickness stainless steel T-joints
Thermal environment effects on alignment behavior of structural joints and assemblies of reentry vehicle and Mars landing module
Areas of contact and pressure distribution in bolted or riveted joints determined by finite element method
Structural joint damping between two mechanically fastened elastic plates during dynamic deformation
Ultrasonic scanning system developed for in place inspection of brazed tube joints
Bright leveling copper plating for improvement of thermal conductance in mechanical joints in vacuum
Axisymmetric postyielded tongue and groove cylindrical joint stress analysis using finite element method
Stainless steel sheet-to-plate tee joint resistance welded by Magnetic Force Upset Welding process, testing performance
Joint absorbs all significant torque, is as rugged as heavy metallic pipe, and has thermal insulation comparable to length of flexible pipe. Design is adaptable to any pipes transporting gases or liquids, including those which are noxious or corrosive.
Welding technique produces more reliable joints than soldering. Investigation used different sizes of copper conductors and component lead ribbons, corrosion protection platings, and melting points of metals being joined. Optimum combination is gold-plated component lead ribbons and solder-plated copper conductors.