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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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Industrial X ray equipment is used for nondestructive testing to detect defects in metal joints, electrical terminal blocks, sealed assemblies, and other hardware. Medical and dental X ray equipment is also used for hardware troubleshooting.
Nondestructive testing techniques for detection of stress corrosion
Nondestructive testing of insensitive electroexplosive devices by transient techniques
Nondestructive testing techniques for coated metallic thermal protection system for space shuttles
Six new handbooks on the fundamentals of nondestructive test techniques supply recent information for instructing inspectors and technicians, and can be used effectively in shops or laboratories, technical schools, or home study programs.
Nondestructive test methods are used for evaluating bond integrity of low-density polyurethane spray-on foam used as cryogenic insulation on aluminum alloy surfaces.
Nuclear magnetic resonance and nuclear quadrupole resonance techniques for nondestructive testing of reinforced plastics for curing and internal stresses
Nondestructive testing techniques for Saturn honeycomb heat shields
Nondestructive testing techniques for laminated printed circuit boards
Nondestructive test predicts the time required for current limiters to blow /open the circuit/ when subjected to a given overload. The test method is based on an empirical relationship between the voltage rise across a current limiter for a fixed time interval and the time to blow.
Program develops instrumentation for nondestructive testing of adhesive-bond strength in honeycomb materials and air coupled inspection methods suitable for large tankage.
Nondestructive test technique developed for large solid propellant grains
Results are presented of nondestructive tests conducted on electroformed, brazed, and diffusion welds in regenerative chambers.
Feasibility and preliminary design study of nondestructive testing for space applications
Training manuals containing the fundamentals of nondestructive testing using magnetic particle as detection media are used by metal parts inspectors and quality assurance specialists. Magnetic particle testing involves magnetization of the test specimen, application of the magnetic particle and interpretation of the patterns formed.
Nondestructive testing of Apollo CSM /Command and Service Module/ spacecraft ordnance explosive devices by indirect and direct neutron radiography
This is a familiarization report of nondestructive testing (ndt) prepared by staff of the Battelle Columbus Laboratories on a NASA contract. There is a short introduction, a chapter on applicability of ndt which is illustrated with examples of typical defects and includes tables comparing the characteristics, interrelationships, and costs of the different techniques. There are chapters dealing with penetrants, magnetic particle radiography, ultrasonics, and eddy currents. New techniques are described.
A description is given of a holographic system for nondestructive testing. The system is comprised of a mirror which illuminates the test object surface; the mirror is positionable to direct illumination on an object at varying angles with respect to a line normal to the surface of the object. In this manner holograms may be produced with varying degrees of sensitivity enabling optimum observation of dimensions of deformation of an object occurring between test exposures.